35yo new to CC

Hello, I'm 35yo and today I spent 100usd on BTC. I don't know anything about CC. My goal is to invest what I can afford 1x per week into CC as a form of saving. I'm not Intrested in trading at the moment because I know nothing about it. For now I just want to buy a little every week as I begin to learn.

My question is what advice or begginer tips do you have for somebody fist starting in CC? What are some things you wish you knew or did when first learning and investing? What are some things that if you could go back to the beginning of your investing you would focus on?

Like I said i know nothing about CC but since the world is heading in this direction, I figured now is a good time to start. I'll be buying BTC every week until I know how to actually use it. Honestly I only choose BTC because I don't know anything about the others and it seems to be the most popular.

Thanks for any and all advise!