The best place to start is doing research on your own. See how the research you’ve done coincides with your particular situation, and see what questions you still don’t have answers for.
For those on here who help you, them knowing what you said in this thread is helpful: http://talk.collegeconfidential.com/what-my-chances/1853953-my-life.html#latest
Since you’re 17 with no high school, are you currently in a community college?
This is what you ideally should do: go to your nearest community college and meet with a counselor. Tell them what interests you, what you want to study, and where you want to go. They’ll help you create a plan, they’ll look at your financial situation, etc.