18M, motivated but no skills/experience yet – where should I start?

I’m 18 and I really want to build something for myself long-term.

Right now I don’t have any specific skills or experience, but I’m fully willing to learn whatever it takes and put serious time into it. I currently work a part-time job and make around €600–800/month, and I have a decent PC I can use.

My problem is that I honestly don’t know where or how to start.

I’m okay with things being hard in the beginning — even if I earn little or nothing at first, or have to invest more time and money than I get back. I’m ready to stick with it long-term because I have a clear goal in mind and I won’t give up on it.

One thing about me: I’m pretty good with people. I’ve been told that I communicate well, can present things clearly, and that I’d probably do well in something like sales or insurance.

Does anyone have ideas or suggestions on what I could start with?
Literally anything would help.