1) If you were to recommend a platform which one and why.
2) If I was to stake my 1 bit coin what would I get in return as a passive income.
3) Can you recommend a good youtube to watch for advice on investing
1) It depends on your preference. If you are not to privacy cautious, you can purchase on a reputable centralized exchange like coinbase or binance. Buying up to one
BTC would trigger some KYC requirement and could lead to your details being sent to the authorities.
You have an alternative to buy on peer-to-peer platforms like hodlhodl or bisq. They are more private than centralized exchanges, but have less liquidity.
2) You can stake it, but it is not worth the risk involved.