diff --git a/README.md b/README.md
index 07f47a3..8a2801f 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,26 @@
[](https://supportcenter.devexpress.com/ticket/details/T945799)
[](https://docs.devexpress.com/GeneralInformation/403183)
-# Getting Started with DevExtreme DropDownButton
+# DevExtreme DropDownButton - Getting Started
-This repository stores the source code for the [Getting Started with DropDownButton](https://js.devexpress.com/Documentation/Guide/UI_Components/DropDownButton/Getting_Started_with_DropDownButton/) tutorial.
+This repository stores code examples of the DropDownButton component for the [Getting Started with DropDownButton](https://js.devexpress.com/Documentation/Guide/UI_Components/DropDownButton/Getting_Started_with_DropDownButton/) tutorial. The DropDownButton combines the functionality of a button and a drop-down menu. This tutorial describes how to configure a DropDownButton that logs user clicks in the browser console.
+
+

+
+## Files to Review
+
+- **Angular**
+ - [app.component.html](angular/src/app/app.component.html)
+ - [app.component.ts](angular/src/app/app.component.ts)
+- **jQuery**
+ - [index.js](jquery/src/index.js)
+- **React**
+ - [App.js](react/src/App.js)
+- **Vue**
+ - [App.vue](vue/src/App.vue)
+
+## Documentation
+
+- [Getting Started with DropDownButton](https://js.devexpress.com/Documentation/Guide/UI_Components/DropDownButton/Getting_Started_with_DropDownButton/)
+
+- [DropDownButton - API Reference](https://js.devexpress.com/Documentation/ApiReference/UI_Components/dxDropDownButton/)
\ No newline at end of file
diff --git a/angular/README.md b/angular/README.md
index 2950eac..7b6c1de 100644
--- a/angular/README.md
+++ b/angular/README.md
@@ -1,6 +1,6 @@
-# Getting Started with DevExtreme Angular DropDownButton
+# DevExtreme Angular DropDownButton - Getting Started
-This repository stores Angular source code for the [Getting Started with DropDownButton](https://js.devexpress.com/Documentation/Guide/UI_Components/DropDownButton/Getting_Started_with_DropDownButton/) tutorial.
+This repository stores code examples of the Angular DropDownButton component for the [Getting Started with DropDownButton](https://js.devexpress.com/Documentation/Guide/UI_Components/DropDownButton/Getting_Started_with_DropDownButton/) tutorial. The DropDownButton combines the functionality of a button and a drop-down menu. This tutorial describes how to configure a DropDownButton that logs user clicks in the browser console.
This project was generated with [Angular CLI](https://github.com/angular/angular-cli) version 10.2.0.
@@ -18,12 +18,12 @@ Run `ng build` to build the project. The build artifacts will be stored in the `
## Running unit tests
-Run `ng test` to execute the unit tests via [Karma](https://karma-runner.github.io).
+Run `ng test` to execute unit tests using [Karma](https://karma-runner.github.io).
## Running end-to-end tests
-Run `ng e2e` to execute the end-to-end tests via [Protractor](http://www.protractortest.org/).
+Run `ng e2e` to execute end-to-end tests using [Protractor](http://www.protractortest.org/).
## Further help
-To get more help on the Angular CLI use `ng help` or go check out the [Angular CLI Overview and Command Reference](https://angular.io/cli) page.
+For help with Angular CLI, use `ng help` or review the [Angular CLI Overview and Command Reference](https://angular.io/cli) page.
diff --git a/dropdownbutton.png b/dropdownbutton.png
new file mode 100644
index 0000000..196b3c2
Binary files /dev/null and b/dropdownbutton.png differ
diff --git a/jquery/README.md b/jquery/README.md
index 56b55de..b79b33d 100644
--- a/jquery/README.md
+++ b/jquery/README.md
@@ -1,5 +1,24 @@
-# Getting Started with DevExtreme jQuery DropDownButton
+# DevExtreme jQuery DropDownButton - Getting Started
-This repository stores jQuery source code for the [Getting Started with DropDownButton](https://js.devexpress.com/Documentation/Guide/UI_Components/DropDownButton/Getting_Started_with_DropDownButton/) tutorial.
+This repository stores the code examples of the jQuery DropDownButton component for the [Getting Started with DropDownButton](https://js.devexpress.com/Documentation/Guide/UI_Components/DropDownButton/Getting_Started_with_DropDownButton/) tutorial. The DropDownButton combines the functionality of a button and a drop-down menu. This tutorial describes how to configure a DropDownButton that logs user clicks in the browser console.
-To launch the project, open `index.html` with your browser.
\ No newline at end of file
+## Installation
+
+Download the example and use NPM to install required libraries.
+
+```
+npm install
+```
+
+## Development server
+
+Run the `npm run start` command to run the development server. Use the following link to check the example:
+```
+http://localhost:3000/src/index.html
+```
+
+## Further help
+
+You can learn more about jQuery API in the [jQuery documentation](https://api.jquery.com/).
+
+To get more help on DevExtreme, submit an issue on [GitHub](https://github.com/DevExpress/devextreme/issues) or [Support Center](https://www.devexpress.com/Support/Center/Question/Create).
\ No newline at end of file
diff --git a/react/README.md b/react/README.md
index 9187934..a7f6f03 100644
--- a/react/README.md
+++ b/react/README.md
@@ -1,6 +1,6 @@
-# Getting Started with DevExtreme React DropDownButton
+# DevExtreme React DropDownButton - Getting Started
-This repository stores React source code for the [Getting Started with DropDownButton](https://js.devexpress.com/Documentation/Guide/UI_Components/DropDownButton/Getting_Started_with_DropDownButton/) tutorial.
+This repository stores the code examples of the React DropDownButton component for the [Getting Started with DropDownButton](https://js.devexpress.com/Documentation/Guide/UI_Components/DropDownButton/Getting_Started_with_DropDownButton/) tutorial. The DropDownButton combines the functionality of a button and a drop-down menu. This tutorial describes how to configure a DropDownButton that logs user clicks in the browser console.
This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app).
diff --git a/vue/README.md b/vue/README.md
index bba76a7..d03ebdc 100644
--- a/vue/README.md
+++ b/vue/README.md
@@ -1,6 +1,6 @@
-# Getting Started with DevExtreme Vue DropDownButton
+# DevExtreme Vue DropDownButton - Getting Started
-This repository stores Vue source code for the [Getting Started with DropDownButton](https://js.devexpress.com/Documentation/Guide/UI_Components/DropDownButton/Getting_Started_with_DropDownButton/) tutorial.
+This repository stores the code examples of the Vue DropDownButton component for the [Getting Started with DropDownButton](https://js.devexpress.com/Documentation/Guide/UI_Components/DropDownButton/Getting_Started_with_DropDownButton/) tutorial. The DropDownButton combines the functionality of a button and a drop-down menu. This tutorial describes how to configure a DropDownButton that logs user clicks in the browser console.
## Project setup
```