Hi, I'm 20 years old have always been interested in this stuff, mostly astrophysics/cosmology. I know just the basics of physics and never took any classes or anything. Right after high school I did a little 'soul searching' and the only thing I found out was that I wasted 2 years of my life...but I've rekindled my love for physics and want to take some serious classes. What I WANT to do is do this kind of stuff professionally. I just need someone to help me get back on track. Some advice anyone? What to take, where to go, what to do. Any advice would be appreciated, thanks.