There's a lot here, already keeping it simple, we have 3 blockchains, a storage solution, a peer-to-peer (P2P secure communication layer and a flagship app called elastOS.
Read about each component here: ABOUT ELASTOS
General Chat - https://t.me/elastosgroup
Developers Chat - https://t.me/elastosdev
Developer Website: https://developer.elastos.org
Elastos Academy: https://elastos.academy
Beginner's Guide: https://www.reddit.com/r/Elastos/comments/7xihw9/elastos_a_beginners_guide
Build on our elastOS app: https://try.elastos.org/ionic-framework/