diff --git a/README.md b/README.md
index 6c7570d..72545a7 100644
--- a/README.md
+++ b/README.md
@@ -64,7 +64,12 @@ To get started, simply fork this repo. Please refer to [CONTRIBUTING.md](CONTRIB
   * [Part 7: Compound Statements](https://norasandler.com/2018/03/14/Write-a-Compiler-7.html)
   * [Part 8: Loops](https://norasandler.com/2018/04/10/Write-a-Compiler-8.html)
 * [Implementing a Language with LLVM](https://llvm.org/docs/tutorial/#kaleidoscope-implementing-a-language-with-llvm)
-* [Tetris tutorial in C++ platform independent focused in game logic for beginners](http://javilop.com/gamedev/tetris-tutorial-in-c-platform-independent-focused-in-game-logic-for-beginners/)
+* Space Invaders from Scratch
+  * [Part 1](http://nicktasios.nl/posts/space-invaders-from-scratch-part-1.html)
+  * [Part 2](http://nicktasios.nl/posts/space-invaders-from-scratch-part-2.html)
+  * [Part 3](http://nicktasios.nl/posts/space-invaders-from-scratch-part-3.html)
+  * [Part 4](http://nicktasios.nl/posts/space-invaders-from-scratch-part-4.html)
+* [Tetris Tutorial in C++ Platform Independent](http://javilop.com/gamedev/tetris-tutorial-in-c-platform-independent-focused-in-game-logic-for-beginners/)
 
 ### OpenGL:
 
@@ -143,6 +148,8 @@ To get started, simply fork this repo. Please refer to [CONTRIBUTING.md](CONTRIB
 * [Build A ToDo App With React Native](https://blog.hasura.io/tutorial-fullstack-react-native-with-graphql-and-authentication-18183d13373a)
 * [Make a Chat Application](https://medium.freecodecamp.org/how-to-build-a-chat-application-using-react-redux-redux-saga-and-web-sockets-47423e4bc21a)
 * [Create a News App with React Native](https://medium.freecodecamp.org/create-a-news-app-using-react-native-ced249263627)
+* [Learn Webpack For React](https://medium.freecodecamp.org/learn-webpack-for-react-a36d4cac5060)
+* [Testing React App With Pupepeteer and Jest](https://blog.bitsrc.io/testing-your-react-app-with-puppeteer-and-jest-c72b3dfcde59)
 
 #### Angular:
 
@@ -180,6 +187,8 @@ To get started, simply fork this repo. Please refer to [CONTRIBUTING.md](CONTRIB
   * [Part 1](https://scotch.io/tutorials/build-a-support-ticket-application-with-adonisjs)
   * [Part 2](https://scotch.io/tutorials/build-a-support-ticket-application-with-adonisjs-part-2)
 * [Build A Native Desktop App with JS](https://medium.freecodecamp.org/build-native-desktop-apps-with-javascript-a49ede90d8e9)
+* Build a Powerful API with NodeJs,GraphQL and Hapi
+  * [Part I](https://medium.com/@wesharehoodies/how-to-setup-a-powerful-api-with-nodejs-graphql-mongodb-hapi-and-swagger-e251ac189649)
 
 #### D3.js
 
@@ -370,6 +379,7 @@ To get started, simply fork this repo. Please refer to [CONTRIBUTING.md](CONTRIB
 
 * [Build Web Apps with Shiny](http://shiny.rstudio.com/tutorial/)
 * [Build A Cryptocurrency Bot](https://towardsdatascience.com/build-a-cryptocurrency-trading-bot-with-r-1445c429e1b1)
+* [Associate Rule Mining in R](https://towardsdatascience.com/association-rule-mining-in-r-ddf2d044ae50)
 
 ## Rust: