below are 2 intros. I use Nexo https://nexo.io/ for my stablecoins because it compounds daily
And use Celsius: https://celsius.network/
if you sign up for celsius, https://celsiusnetwork.app.link/15398955a5

https://cointelegraph.com/explained/decentralized-finance-explained
https://blockonomi.com/what-is-decentralized-finance-defi/