This repo contains projects to build a decentralized app (DAPP) and also the centralized app which we moved to decentralized.
https://chrome.google.com/webstore/detail/metamask/nkbihfbeogaeaoehlefnkodbefgpgknn
To get free ethereum for Test on rinkeby test network without posting in social media in https://faucet.rinkeby.io/ try
Sample Tranaction: https://rinkeby.etherscan.io/tx/0xf4a9aa1758c6eca0ef6863ea5dc058b80e6acef0d4f8fb8d196150f824d152fc