add new tutorial videos for dart, Update index.md

Author: 0xemrekaya

public/content/developers/docs/programming-languages/dart/index.md

@@ -18,6 +18,8 @@ incomplete: true
 - If you prefer to learn by watching a video, you can watch [Build Your First Blockchain Flutter App](https://www.youtube.com/watch?v=3Eeh3pJ6PeA), which is about an hour long
 - If you are impatient, you might prefer [Building a Blockchain Decentralized-app with Flutter and Dart on Ethereum](https://www.youtube.com/watch?v=jaMFEOCq_1s), which is only about twenty minutes
 - [Integrating MetaMask in Flutter application](https://youtu.be/8qzVDje3IWk) - this short video takes you through the steps of integrating MetaMask into your Flutter applications
+- [Flutter Dapp Simple Wallet](https://youtu.be/JMfIBpuAhKA?si=LdhvRORRZKfMD0Cn) and [First Flutter DApp - Solidity, Truffle, Ganache](https://youtu.be/bHw2gQZxJ_s?si=8EyLJqOI-AYRYt7r) - these videos show how to make simple dapps in Flutter using Truffle and Ganache.
+- [Mobile Blockchain Developer Bootcamp Course With Solidity & Flutter](https://youtube.com/playlist?list=PL4V4Unlk5luhQ26ERO6hWEbcUwHDSSmVH&si=qBtm5lqsB6ePAZn6) - full stack mobile blockchain developer course playlist 
 
 ## Working with Ethereum clients {#working-with-ethereum-clients}