diff --git a/docs/_config.yml b/docs/_config.yml
index 4d7bc9746..31f8c6c04 100644
--- a/docs/_config.yml
+++ b/docs/_config.yml
@@ -85,6 +85,9 @@ navigation:
   - title: Upgrade Guide
     url: upgrade-guide.html
     icon: fas fa-hand-point-up
+  - title: Contributing Guide
+    url: contributing.html
+    icon: fas fa-hands-helping
   - title: FAQ
     url: faq.html
     icon: fas fa-question-circle
diff --git a/docs/contributing.md b/docs/contributing.md
new file mode 100644
index 000000000..b04e6acdd
--- /dev/null
+++ b/docs/contributing.md
@@ -0,0 +1,47 @@
+---
+layout: page
+title: Contributing Guide
+---
+
+Contributions are always **welcome and recommended**! Here is how for beginner's: [Get started with open source click here](https://youtu.be/GbqSvJs-6W4)
+
+1. Contribution Requirements : 
+    * When you contribute, you agree to give a non-exclusive license to AdminLTE.io to use that contribution in any context as we (AdminLTE.io) see appropriate. 
+    * If you use content provided by another party, it must be appropriately licensed using an [open source](https://opensource.org/licenses) license.
+    * Contributions are only accepted through GitHub pull requests.
+    * Finally, contributed code must work in all supported browsers (see above for browser support).
+2. Installation :
+    * Fork the repository ([here is the guide](https://help.github.com/articles/fork-a-repo/)).
+    * Clone to your machine
+
+    ```bash
+    git clone https://github.com/YOUR_USERNAME/AdminLTE.git
+    ```
+    * Create a new branch
+3. Compile dist files (Development) :
+    * To compile the dist files you need Node.js 10 or higher/npm (node package manager)
+    * Delete ./package-lock.json file
+    * `npm install` (install npm deps)
+    * `npm run dev` (developer mode, autocompile with browsersync support for live demo)
+    * Make your changes only in ./buid Folder OR package.json OR ./dist/js/demo.js OR in any html files which nessary to contribute
+    * Do not changes in ./dist/css/ AND ./dist/js/ Because its compiled files
+    * `npm run production` (compile css/js files and test every pages are perfectly working fine, before creating pull request)
+4. Create a pull request
+
+### Online one-click setup for contributing
+
+You can use Gitpod(an online IDE which is free for Open Source) for working on issues or making Prs. With a single click it will launch a workspace and automatically:
+
+- clone the `AdminLTE` repo.
+- install the dependencies.
+- run `yarn dev` to start the server.
+
+[![Open in Gitpod](https://gitpod.io/button/open-in-gitpod.svg)](https://gitpod.io/from-referrer/)
+
+### Compile dist files
+
+To compile the dist files you need Node.js/npm, clone/download the repo then:
+
+1. `npm install` (install npm deps)
+2. _Optional:_ `npm run dev` (developer mode, autocompile with browsersync support for live demo)
+3. `npm run production` (compile css/js files)
diff --git a/docs/dependencies.md b/docs/dependencies.md
index 8f91ba1c1..14a084016 100644
--- a/docs/dependencies.md
+++ b/docs/dependencies.md
@@ -8,9 +8,9 @@ title: Dependencies & Plugins
 AdminLTE depends on two main frameworks. The downloadable package contains both of these libraries, so you don't have to manually download them.
 {: .lead}
 
-- [Bootstrap 4](https://getbootstrap.com/)
-- [jQuery 3.3.1+](https://jquery.com/)
-- [Popper.js 1.14.7+](https://popper.js.org/)
+- [Bootstrap 4.5](https://getbootstrap.com/)
+- [jQuery 3.5.1+](https://jquery.com/)
+- [Popper.js 1.16.1+](https://popper.js.org/)
 - [All other plugins are listed below](#plugins)
 
 #### Plugins
diff --git a/docs/index.md b/docs/index.md
index b990bf9c1..23e0cd186 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -38,3 +38,7 @@ composer require "almasaeed2010/adminlte=~3.0"
 ```bash
 git clone https://github.com/ColorlibHQ/AdminLTE.git
 ```
+
+### From CDN
+
+[https://www.jsdelivr.com/package/npm/admin-lte](https://www.jsdelivr.com/package/npm/admin-lte)
\ No newline at end of file
diff --git a/docs/layout.md b/docs/layout.md
index ea380d844..7249db42c 100644
--- a/docs/layout.md
+++ b/docs/layout.md
@@ -21,7 +21,7 @@ The layout consists of four major parts:
 > You cannot use both layout-boxed and layout-navbar-fixed or layout-footer-fixed at the same time. Anything else can be mixed together.
 {: .quote-danger}
 
-AdminLTE 3.0 provides a set of options to apply to your main layout. Each one of these classes can be added to the body tag to get the desired goal.
+AdminLTE 3.1 provides a set of options to apply to your main layout. Each one of these classes can be added to the body tag to get the desired goal.
 
 - Fixed Sidebar: use the class `.layout-fixed` to get a fixed sidebar.
 - Fixed Navbar: use the class `.layout-navbar-fixed` to get a fixed navbar.
@@ -51,7 +51,7 @@ You can also use the following classes for responsive changes with placing
 
 #### Color Variations
 
-AdminLTE 3.0 provides a set of color variations to apply to your sidebar (light & dark) & navbar. You can combine any available color with these class prefixes:
+AdminLTE 3.1 provides a set of color variations to apply to your sidebar (light & dark) & navbar. You can combine any available color with these class prefixes:
 
 - `.navbar-*`
 - `.sidebar-dark-*`