Hey, as you know already from the title, I'm new to Bitcoin, I would like you to help me by telling, where to buy, when to buy, where to sell, when to sell, things like that.
Important: I'm 17 years old, some methods may not work if I don't have 18, and that's what I have noticed.
I hope you can help me get started.

Edit: Thank you guys, your information is helping a lot, I already have a wallet, feel free to help me
1KnWzEdJgAmE3rB3Xax8sDfydnikguxrhhFirst before you gonna do to join BUY and SELL transaction or any investment in crypto currency just see to it that you can afford to lose and do you have many more stacks of patience. This program you want to join is risky and Price volatility. If you have that some other qualification that I've mention so proceed what you want to do. here are some preference to guide you how to start:
Guide: Try to search in google and you tube in some other technique on how to join in trading and investment and try to find a legit Flatform for you to be able to join in BUY and SELL transaction.