Thinking about buying, need help

My entire life I’ve always loved music, although my taste has changed drastically over time i still get behind multiple genres of music and love how they sound. I’m still in high school but as of late my lack of plan for the future has been worrying me. I’ve been trying to look deeply into myself finding out hobbies/interests I have to persuade me into a future job so that I can do something with my life that I enjoy.

I spend a lot of my time doom scrolling on TikTok, but I always see people on FL studio making songs/beats that just really get me moving and I’d love to do the same.

So I just have some basic questions for getting started, I’d love even one answer to one question but if you do all or none then thank you for reading.

Q1: Which version should I purchase?

Q2: If I purchase a cheaper version and want to get a more expensive version do I get a discount on that upgrade?

Q3: What are some good/needed externalities, like headphones, microphones, etc?

Q4: Any tricks or youtubers/videos that I should watch to learn to get the hang of things.

Q5: I’m not sure why i would but do i need any crazy PC specs? I have one but it’s not very up to date with anything.

That’s all of the top of my head right now. If you think there’s any important questions I didn’t ask and would like to give me the answer to that would be greatly appreciated.