I need some advice, I had some crypto a few years ago and then sold it and made some good profits and I am now planning to buy some crypto once again and I admit that I am outdated on the crypto world right now. Can someone give a brief explanation of what DeFi is and what are your top 5 coins/tokens and where do you usually trade it. Thanks! 
As far as i know DeFi is like a Fintech project but claim themself as decentralized one (no centralized control to set interest rate or any thing about finance).
The top coins that i hold at this time is EOS and CLO, i dont have any special reason just want to hold them at this time.