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I'm glad you asked! Here's an affiliate link to Celsius. It's app only, so you have to get it on a smartphone of some kind. If you like it, and deposit $200 or more, they'll give you and me an extra $10. I've been using them for a while, I've even gotten a loan from them on my BTC holdings. It's super easy! https://celsiusnetwork.app.link/Johnb875

As far as the Tezos (XTZ), probably the easiest way to bake that is to buy it on Kraken or Coinbase, and stake it right on the exchange. Staking it yourself isn't hard either though.

And the magical world of DeFi is just beginning and changing fast. I don't know much about it myself, but you would do well to look at Maker DAO (MKR) and it's DAI stablecoins, Dy/Dx a decentralized exchange, and there's a thing called "Pool" which is a no lose lottery, kinda cool!