diff --git a/README.md b/README.md
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+++ b/README.md
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+[![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat-square)](http://makeapullrequest.com)
+
 # android01
-example project for android mobile programming [slide-01](./slide/android-01.pdf)
+
+This android project contains the source code of the examples of the first section of the android programming course. [slide-01](./slide/android-01.pdf)
+
+For further study on threads and concurrency in java view [this](./further-study). (From [javacup tranining](https://javacup.ir/javacup-training-videos/))
+
+## Contents
 
 - Builder Pattern
 - Static Factory Methods
@@ -8,4 +15,24 @@ example project for android mobile programming [slide-01](./slide/android-01.pdf
 - Use StringBuilder
 - Force No Instantiation
 - Avoid Mutability
-- Concurrency and Multithreading
+- Concurrency and Multi-threading
+
+
+## Usage
+Clone this repository and import into **Android Studio**
+```bash
+git clone git@github.com:sharif-dev/android01.git
+```
+
+## Maintainers
+This project is maintained by:
+* [Yumcoder](https://github.com/YumcoderCom)
+
+
+## Contributing
+
+1. Fork it
+2. Create your specific branch (git checkout -b my-branch)
+3. Commit your changes (git commit -m 'Commit message')
+5. Push your branch (git push origin my-branch)
+6. Create a new Pull Request
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