from your post history it looks like you are in slovenia, and according to a quick google, native residents don't pay tuition for the first degree.

i would go ahead and go to college at least as long as tuition was free.

if you were in the USA (i am) i would suggest community college/maybe try to find a semi relevant part time job and transition into a work study program.

i would just major in computer science.

i don't think the amount of money you earn over the relevant time period will make a huge difference. but if you can put yourself in a position where you can use some of the new tools that might make a big difference for you.

also i would think that would be the most fun and exciting way to live if i was in your shoes (other ppl may have diff ideas about what constitutes "fun" or "exciting" lol)