Looking to get into the bitcoin/crypto market

Hey so I want to start investing in crypto, bitcoin especially, could you guys: 1. Direct me to somewhere I can learn about it comprehensively (how did you learn about it), 2. Give me pros, cons, and risks, and 3. Tell which platform is best/ explain pros/cons of certain ones (I’m in Canada)

Side note, my friend sold 30 BTC for $300 after buying for $1000 back when BTC was just starting, and could have $2.7 million CAD now (over $2 million USD