I've known btc way back 2017 and my friend introduced this to me, as a beginner, it's really hard to understand everything. The first thing I did was study here in the forum, an endless reading. By the time I was confident enough to invest, my best friend and I started to invest and hold btc and some other coins. So basically you need knowledge first and be sure you are ready to accept the risk of investing in btc or any other coins.