University - this might be a really naive question

[Myka]

Ok, so I should go to university. Or something...

I have attended some college courses, but that's about it. I haven't gone to university because I don't know what I want to do. I think it's nigh time I figure it out. So...I'm sure some of you will think this to be an awfully naive question out of an almost-30-year-old, but how do you figure out what courses to take, and what kind of jobs those courses set you up to do? Like what do you use a Bachelor of Science for? Or Political Sciences? Or Environmental Studies? Or everything else? I have been hunting the internet, and can't figure out what courses and bachelors and masters and all that jibba jabba I don't understand would do for me. How do I find this information?