diff --git a/dart_application_1/.gitignore b/dart_application_1/.gitignore
new file mode 100644
index 0000000..3a85790
--- /dev/null
+++ b/dart_application_1/.gitignore
@@ -0,0 +1,3 @@
+# https://dart.dev/guides/libraries/private-files
+# Created by `dart pub`
+.dart_tool/
diff --git a/dart_application_1/CHANGELOG.md b/dart_application_1/CHANGELOG.md
new file mode 100644
index 0000000..effe43c
--- /dev/null
+++ b/dart_application_1/CHANGELOG.md
@@ -0,0 +1,3 @@
+## 1.0.0
+
+- Initial version.
diff --git a/dart_application_1/README.md b/dart_application_1/README.md
new file mode 100644
index 0000000..b5e18a6
--- /dev/null
+++ b/dart_application_1/README.md
@@ -0,0 +1,52 @@
+
+# Project 1
+
+A project for a library of books and the creation of crud processes inside it.
+
+## Project Operations
+
+#### 1- Add Books 
+
+The process of adding books so that the user can add many books.
+
+#### 2- Delete Books
+
+The method of deletion so that each user can delete the book he wants
+
+#### 3- Query Books 
+
+Searches within the project are available for the user to search for books and the desired number of pages
+
+#### 4- Purchase
+
+Payments within the project allow the user to pay the amount of the book and then view the books he has purchased
+
+#### 5- Invoice 
+
+View invoices after purchases with important details that benefit the seller and buyer
+
+
+
+
+
+## This Project Used By
+
+This project is used by the following companies:
+
+- Dart
+- Git - Github
+
+
+## Resources
+
+
+
+[Dart Tutorials](https://dart.dev/tutorials)
+
+
+
+
+
+
+
+
diff --git a/dart_application_1/analysis_options.yaml b/dart_application_1/analysis_options.yaml
new file mode 100644
index 0000000..dee8927
--- /dev/null
+++ b/dart_application_1/analysis_options.yaml
@@ -0,0 +1,30 @@
+# This file configures the static analysis results for your project (errors,
+# warnings, and lints).
+#
+# This enables the 'recommended' set of lints from `package:lints`.
+# This set helps identify many issues that may lead to problems when running
+# or consuming Dart code, and enforces writing Dart using a single, idiomatic
+# style and format.
+#
+# If you want a smaller set of lints you can change this to specify
+# 'package:lints/core.yaml'. These are just the most critical lints
+# (the recommended set includes the core lints).
+# The core lints are also what is used by pub.dev for scoring packages.
+
+include: package:lints/recommended.yaml
+
+# Uncomment the following section to specify additional rules.
+
+# linter:
+#   rules:
+#     - camel_case_types
+
+# analyzer:
+#   exclude:
+#     - path/to/excluded/files/**
+
+# For more information about the core and recommended set of lints, see
+# https://dart.dev/go/core-lints
+
+# For additional information about configuring this file, see
+# https://dart.dev/guides/language/analysis-options
diff --git a/dart_application_1/bin/dart_application_1.dart b/dart_application_1/bin/dart_application_1.dart
new file mode 100644
index 0000000..e1b1c94
--- /dev/null
+++ b/dart_application_1/bin/dart_application_1.dart
@@ -0,0 +1,95 @@
+
+import 'dart:io';
+
+import 'data.dart';
+
+void main(List<String> arguments) {
+  var count = 0;
+  while (count < 10) {
+    print("please select from menu:");
+    print("1: add new ,2: display data, Q: quite");
+    String selected = stdin.readLineSync()!;
+
+    switch (selected) {
+      case "1":
+        addNewItem();
+        break;
+
+      case "2":
+        displayItem();
+        break;
+
+      case "Q" || "q":
+        exit(0);
+
+      default:
+        print("where are you");
+    }
+    count++;
+  }
+}
+
+addNewItem() {
+  try {
+    print("please inter your name");
+    String author = stdin.readLineSync() ?? "John";
+    print("please inter your age");
+    String country = stdin.readLineSync() ?? "John";
+    print("please inter your secretIdentity");
+    String language = stdin.readLineSync() ?? "John";
+    print("please inter your secretIdentity");
+    int pages = int.parse(stdin.readLineSync()!);
+
+
+    List pawers = [];
+    do {
+      String enterPawers = stdin.readLineSync()!;
+
+      if (enterPawers == "q") {
+        break;
+      } else {
+        pawers.add(enterPawers);
+      }
+    } while (true);
+
+    final userMap = {
+      "author": author,
+      "country": country,
+      "language": language,
+      "pages": pages
+    };
+    myData.add(userMap);
+  } catch (error) {
+    print("error");
+  }
+}
+
+class Books {
+  late String author;
+  late String country;
+  late String language;
+  late int pages;
+  Books(
+      {required this.author,
+      required this.country,
+      required this.language,
+      required this.pages});
+  displayData() {
+    print("author:$author country: $country language: $language pages: $pages");
+  }
+}
+
+displayItem() {
+  List<Books> listItem = [];
+  for (var element in myData) {
+    listItem.add(Books(
+        author: element["author"],
+        country: element["age"],
+        language: element["language"],
+        pages: element["pages"]));
+  }
+  for (var item in listItem) {
+    print("------------");
+    item.displayData();
+  }
+}
diff --git a/dart_application_1/bin/data.dart b/dart_application_1/bin/data.dart
new file mode 100644
index 0000000..fe47bcf
--- /dev/null
+++ b/dart_application_1/bin/data.dart
@@ -0,0 +1,43 @@
+final List myData = [
+  {
+    "author": "Chinua Achebe",
+    "country": "Nigeria",
+    "imageLink": "images/things-fall-apart.jpg",
+    "language": "English",
+    "link": "https://en.wikipedia.org/wiki/Things_Fall_Apart\n",
+    "pages": 209,
+    "title": "Things Fall Apart",
+    "year": 1958
+  },
+  {
+    "author": "Hans Christian Andersen",
+    "country": "Denmark",
+    "imageLink": "images/fairy-tales.jpg",
+    "language": "Danish",
+    "link":
+        "https://en.wikipedia.org/wiki/Fairy_Tales_Told_for_Children._First_Collection.\n",
+    "pages": 784,
+    "title": "Fairy tales",
+    "year": 1836
+  },
+  {
+    "author": "Dante Alighieri",
+    "country": "Italy",
+    "imageLink": "images/the-divine-comedy.jpg",
+    "language": "Italian",
+    "link": "https://en.wikipedia.org/wiki/Divine_Comedy\n",
+    "pages": 928,
+    "title": "The Divine Comedy",
+    "year": 1315
+  },
+  {
+    "author": "Unknown",
+    "country": "Sumer and Akkadian Empire",
+    "imageLink": "images/the-epic-of-gilgamesh.jpg",
+    "language": "Akkadian",
+    "link": "https://en.wikipedia.org/wiki/Epic_of_Gilgamesh\n",
+    "pages": 160,
+    "title": "The Epic Of Gilgamesh",
+    "year": -1700
+  }
+];
diff --git a/dart_application_1/lib/dart_application_1.dart b/dart_application_1/lib/dart_application_1.dart
new file mode 100644
index 0000000..f64ad72
--- /dev/null
+++ b/dart_application_1/lib/dart_application_1.dart
@@ -0,0 +1,3 @@
+int calculate() {
+  return 6 * 7;
+}
diff --git a/dart_application_1/lib/data.dart b/dart_application_1/lib/data.dart
new file mode 100644
index 0000000..b9f78bb
--- /dev/null
+++ b/dart_application_1/lib/data.dart
@@ -0,0 +1 @@
+// TODO Implement this library.
\ No newline at end of file
diff --git a/dart_application_1/pubspec.lock b/dart_application_1/pubspec.lock
new file mode 100644
index 0000000..8aa9b5a
--- /dev/null
+++ b/dart_application_1/pubspec.lock
@@ -0,0 +1,381 @@
+# Generated by pub
+# See https://dart.dev/tools/pub/glossary#lockfile
+packages:
+  _fe_analyzer_shared:
+    dependency: transitive
+    description:
+      name: _fe_analyzer_shared
+      sha256: "0816708f5fbcacca324d811297153fe3c8e047beb5c6752e12292d2974c17045"
+      url: "https://pub.dev"
+    source: hosted
+    version: "62.0.0"
+  analyzer:
+    dependency: transitive
+    description:
+      name: analyzer
+      sha256: "21862995c9932cd082f89d72ae5f5e2c110d1a0204ad06e4ebaee8307b76b834"
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.0.0"
+  args:
+    dependency: transitive
+    description:
+      name: args
+      sha256: eef6c46b622e0494a36c5a12d10d77fb4e855501a91c1b9ef9339326e58f0596
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.2"
+  async:
+    dependency: transitive
+    description:
+      name: async
+      sha256: "947bfcf187f74dbc5e146c9eb9c0f10c9f8b30743e341481c1e2ed3ecc18c20c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.11.0"
+  boolean_selector:
+    dependency: transitive
+    description:
+      name: boolean_selector
+      sha256: "6cfb5af12253eaf2b368f07bacc5a80d1301a071c73360d746b7f2e32d762c66"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.1"
+  collection:
+    dependency: transitive
+    description:
+      name: collection
+      sha256: ee67cb0715911d28db6bf4af1026078bd6f0128b07a5f66fb2ed94ec6783c09a
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.18.0"
+  convert:
+    dependency: transitive
+    description:
+      name: convert
+      sha256: "0f08b14755d163f6e2134cb58222dd25ea2a2ee8a195e53983d57c075324d592"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.1"
+  coverage:
+    dependency: transitive
+    description:
+      name: coverage
+      sha256: "2fb815080e44a09b85e0f2ca8a820b15053982b2e714b59267719e8a9ff17097"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.6.3"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      sha256: ff625774173754681d66daaf4a448684fb04b78f902da9cb3d308c19cc5e8bab
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.3"
+  dart_internal:
+    dependency: transitive
+    description:
+      name: dart_internal
+      sha256: "689dccc3d5f62affd339534cca548dce12b3a6b32f0f10861569d3025efc0567"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.9"
+  file:
+    dependency: transitive
+    description:
+      name: file
+      sha256: "5fc22d7c25582e38ad9a8515372cd9a93834027aacf1801cf01164dac0ffa08c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.0.0"
+  frontend_server_client:
+    dependency: transitive
+    description:
+      name: frontend_server_client
+      sha256: "408e3ca148b31c20282ad6f37ebfa6f4bdc8fede5b74bc2f08d9d92b55db3612"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.2.0"
+  glob:
+    dependency: transitive
+    description:
+      name: glob
+      sha256: "0e7014b3b7d4dac1ca4d6114f82bf1782ee86745b9b42a92c9289c23d8a0ab63"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.2"
+  http_multi_server:
+    dependency: transitive
+    description:
+      name: http_multi_server
+      sha256: "97486f20f9c2f7be8f514851703d0119c3596d14ea63227af6f7a481ef2b2f8b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.2.1"
+  http_parser:
+    dependency: transitive
+    description:
+      name: http_parser
+      sha256: "2aa08ce0341cc9b354a498388e30986515406668dbcc4f7c950c3e715496693b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.2"
+  io:
+    dependency: transitive
+    description:
+      name: io
+      sha256: "2ec25704aba361659e10e3e5f5d672068d332fc8ac516421d483a11e5cbd061e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.4"
+  js:
+    dependency: transitive
+    description:
+      name: js
+      sha256: f2c445dce49627136094980615a031419f7f3eb393237e4ecd97ac15dea343f3
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.6.7"
+  lints:
+    dependency: "direct dev"
+    description:
+      name: lints
+      sha256: "0a217c6c989d21039f1498c3ed9f3ed71b354e69873f13a8dfc3c9fe76f1b452"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.1"
+  logging:
+    dependency: transitive
+    description:
+      name: logging
+      sha256: "623a88c9594aa774443aa3eb2d41807a48486b5613e67599fb4c41c0ad47c340"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.0"
+  matcher:
+    dependency: transitive
+    description:
+      name: matcher
+      sha256: "1803e76e6653768d64ed8ff2e1e67bea3ad4b923eb5c56a295c3e634bad5960e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.12.16"
+  meta:
+    dependency: transitive
+    description:
+      name: meta
+      sha256: "3c74dbf8763d36539f114c799d8a2d87343b5067e9d796ca22b5eb8437090ee3"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.9.1"
+  mime:
+    dependency: transitive
+    description:
+      name: mime
+      sha256: e4ff8e8564c03f255408decd16e7899da1733852a9110a58fe6d1b817684a63e
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.4"
+  node_preamble:
+    dependency: transitive
+    description:
+      name: node_preamble
+      sha256: "6e7eac89047ab8a8d26cf16127b5ed26de65209847630400f9aefd7cd5c730db"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.2"
+  package_config:
+    dependency: transitive
+    description:
+      name: package_config
+      sha256: "1c5b77ccc91e4823a5af61ee74e6b972db1ef98c2ff5a18d3161c982a55448bd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.0"
+  path:
+    dependency: transitive
+    description:
+      name: path
+      sha256: "8829d8a55c13fc0e37127c29fedf290c102f4e40ae94ada574091fe0ff96c917"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.8.3"
+  pool:
+    dependency: transitive
+    description:
+      name: pool
+      sha256: "20fe868b6314b322ea036ba325e6fc0711a22948856475e2c2b6306e8ab39c2a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.5.1"
+  pub_semver:
+    dependency: transitive
+    description:
+      name: pub_semver
+      sha256: "40d3ab1bbd474c4c2328c91e3a7df8c6dd629b79ece4c4bd04bee496a224fb0c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.4"
+  shelf:
+    dependency: transitive
+    description:
+      name: shelf
+      sha256: ad29c505aee705f41a4d8963641f91ac4cee3c8fad5947e033390a7bd8180fa4
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.1"
+  shelf_packages_handler:
+    dependency: transitive
+    description:
+      name: shelf_packages_handler
+      sha256: "89f967eca29607c933ba9571d838be31d67f53f6e4ee15147d5dc2934fee1b1e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.2"
+  shelf_static:
+    dependency: transitive
+    description:
+      name: shelf_static
+      sha256: a41d3f53c4adf0f57480578c1d61d90342cd617de7fc8077b1304643c2d85c1e
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.2"
+  shelf_web_socket:
+    dependency: transitive
+    description:
+      name: shelf_web_socket
+      sha256: "9ca081be41c60190ebcb4766b2486a7d50261db7bd0f5d9615f2d653637a84c1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.4"
+  source_map_stack_trace:
+    dependency: transitive
+    description:
+      name: source_map_stack_trace
+      sha256: "84cf769ad83aa6bb61e0aa5a18e53aea683395f196a6f39c4c881fb90ed4f7ae"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.1"
+  source_maps:
+    dependency: transitive
+    description:
+      name: source_maps
+      sha256: "708b3f6b97248e5781f493b765c3337db11c5d2c81c3094f10904bfa8004c703"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.10.12"
+  source_span:
+    dependency: transitive
+    description:
+      name: source_span
+      sha256: "53e943d4206a5e30df338fd4c6e7a077e02254531b138a15aec3bd143c1a8b3c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.10.0"
+  stack_trace:
+    dependency: transitive
+    description:
+      name: stack_trace
+      sha256: "73713990125a6d93122541237550ee3352a2d84baad52d375a4cad2eb9b7ce0b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.11.1"
+  stream_channel:
+    dependency: transitive
+    description:
+      name: stream_channel
+      sha256: ba2aa5d8cc609d96bbb2899c28934f9e1af5cddbd60a827822ea467161eb54e7
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.2"
+  string_scanner:
+    dependency: transitive
+    description:
+      name: string_scanner
+      sha256: "556692adab6cfa87322a115640c11f13cb77b3f076ddcc5d6ae3c20242bedcde"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.0"
+  term_glyph:
+    dependency: transitive
+    description:
+      name: term_glyph
+      sha256: a29248a84fbb7c79282b40b8c72a1209db169a2e0542bce341da992fe1bc7e84
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.1"
+  test:
+    dependency: "direct dev"
+    description:
+      name: test
+      sha256: "67ec5684c7a19b2aba91d2831f3d305a6fd8e1504629c5818f8d64478abf4f38"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.24.4"
+  test_api:
+    dependency: transitive
+    description:
+      name: test_api
+      sha256: "5c2f730018264d276c20e4f1503fd1308dfbbae39ec8ee63c5236311ac06954b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.6.1"
+  test_core:
+    dependency: transitive
+    description:
+      name: test_core
+      sha256: "6b753899253c38ca0523bb0eccff3934ec83d011705dae717c61ecf209e333c9"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.5.4"
+  typed_data:
+    dependency: transitive
+    description:
+      name: typed_data
+      sha256: facc8d6582f16042dd49f2463ff1bd6e2c9ef9f3d5da3d9b087e244a7b564b3c
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.2"
+  vm_service:
+    dependency: transitive
+    description:
+      name: vm_service
+      sha256: ada49637c27973c183dad90beb6bd781eea4c9f5f955d35da172de0af7bd3440
+      url: "https://pub.dev"
+    source: hosted
+    version: "11.8.0"
+  watcher:
+    dependency: transitive
+    description:
+      name: watcher
+      sha256: "3d2ad6751b3c16cf07c7fca317a1413b3f26530319181b37e3b9039b84fc01d8"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
+  web_socket_channel:
+    dependency: transitive
+    description:
+      name: web_socket_channel
+      sha256: d88238e5eac9a42bb43ca4e721edba3c08c6354d4a53063afaa568516217621b
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.0"
+  webkit_inspection_protocol:
+    dependency: transitive
+    description:
+      name: webkit_inspection_protocol
+      sha256: "67d3a8b6c79e1987d19d848b0892e582dbb0c66c57cc1fef58a177dd2aa2823d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.0"
+  yaml:
+    dependency: transitive
+    description:
+      name: yaml
+      sha256: "75769501ea3489fca56601ff33454fe45507ea3bfb014161abc3b43ae25989d5"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.2"
+sdks:
+  dart: ">=3.0.5 <3.3.0"
diff --git a/dart_application_1/pubspec.yaml b/dart_application_1/pubspec.yaml
new file mode 100644
index 0000000..c60b782
--- /dev/null
+++ b/dart_application_1/pubspec.yaml
@@ -0,0 +1,15 @@
+name: dart_application_1
+description: A sample command-line application.
+version: 1.0.0
+# repository: https://github.com/my_org/my_repo
+
+environment:
+  sdk: ^3.0.5
+
+# Add regular dependencies here.
+dependencies:
+  # path: ^1.8.0
+
+dev_dependencies:
+  lints: ^2.0.0
+  test: ^1.21.0
diff --git a/dart_application_1/test/dart_application_1_test.dart b/dart_application_1/test/dart_application_1_test.dart
new file mode 100644
index 0000000..6abdf32
--- /dev/null
+++ b/dart_application_1/test/dart_application_1_test.dart
@@ -0,0 +1,8 @@
+import 'package:dart_application_1/dart_application_1.dart';
+import 'package:test/test.dart';
+
+void main() {
+  test('calculate', () {
+    expect(calculate(), 42);
+  });
+}