I'm BitPuffle, and I'm a major newbie when it comes to bitcoin. I've wanted to invest in BTC for years, but never really expressed my desire to invest until now.
If you're planning on investing, then it'd be best if you study first before you actually invest. Make sure you know what you're getting in to before putting in money.
A Beginner's Guide to Blockchain Technology -
https://www.coindesk.com/information/I'm turning 21 years old in october, so I don't even know if I'm allowed here.
Bitcointalk doesn't have an age requirement as far as I know, so you should be fine.