Improve lesson 1

Signed-off-by: Ali Yousuf <aly.yousuf7@gmail.com>

lesson-1/README.md

@@ -1,9 +1,7 @@
 # MongoDB Shell Basics
 The goal is to get a basic idea of Mongo Shell commands and how to use them
 
-
 ### 1. Start mongo daemon 
-
 ```
 C:\> net start MongoDb  // if installed as windows service
 
@@ -17,14 +15,13 @@ C:\> "C:\Program Files\MongoDB\Server\4.2\bin\mongo.exe"
 ```
 
 ### 2. Start mongo shell
-
 ```
 C:\> mongo
 ```
 
-Note: this will connect using the default port 27017. Use -p for specifying a different port.
+Note: This will connect using the default port `27017`. Use `-p` for specifying a different port.
 
-You should get an output similar to the following
+You should get something similar to this:
 
 ```
 MongoDB shell version v4.2.0
@@ -36,10 +33,8 @@ MongoDB server version: 4.2.0
 
 From this moment on, everything you’ll type will be executed in the mongo shell.
 
-
 ### 3. List databases
-
-Your server may host several different databases you have access to
+Your server may host several databases you have access to.
 
 ```
 > show dbs
@@ -48,15 +43,15 @@ config     0.000GB
 local      0.000GB
 ```
 
-### 4. Find the current database your are connection with
+### 4. Find the database you're using
 ```
->db
+> db
 test
 ```
 
-### 5. Select / Create a database
-
-Database is automatically created if it does not exists
+### 5. Switch / Create a database
+To switch the database, you can run the `use` command.
+If the database doesn't exist, it will be created for you.
 
 ```
 > use shop
@@ -67,51 +62,47 @@ shop
 
 Note: `show dbs` will not show the new database because it is empty.
 
-
-### 6. Create collection 
-
-
+### 6. Create collection
 ```
-db.createCollection("products")
+> db.createCollection("products")
 
-OR 
-db.products.insertOne({name:"paper",price:10, description:"A4 size papers"})
+OR
 
+> db.products.insertOne({name:"paper",price:10, description:"A4 size papers"})
 ```
 
 Collections can be capped by setting size / max documents.
 
 ### 7. Run few insert commands to insert some data
-
 ```
-db.products.insertOne({name:"Book",price:10, description:"A book"})
-
+> db.products.insertOne({name:"Book",price:10, description:"A book"})
 ```
 
 ### 8. List collections
 ```
->show collections
+> show collections
 products
 ```
 
 ### 9. Find all documents
-
 ```
->db.products.find()
+> db.products.find()
 
->db.products.find().pretty()
+> db.products.find().pretty()
 ```
 
 ### 10. View logs
-
 ```
 > show log global
-
 ```
 
 ### Some more commands
-you can always use help command to get list of all available commands 
+You can always use `help` command to get list of all available commands.
+
+To list database specific commands, you may use `db.help()`.
+
+```
+> db.dropDatebase()
+> db.getState()
+
 ```
->db.dropDatebase()
->db.getState()
-```