What's the best I can do with it?

Unfortunately I don't have the money to build a studio I want but I would like to get some help with what I have and what the best things I could do with the room I have available (absorbtion, diffusors, room treatment, etc.). I have attached some picture (not great ones sorry). The basic deminsions of the room are 30' x 30' by 8' high (pretty large and probably way too big). The shape of the room is pretty much a half circle with a straight wall connecting on the other side. The biggest worry I have is the windows around the perimeter. I'm still really new to sound but would like some help with the first steps I should take (furniture can and will be moved). Recordings will mostly be country music and some blues. No hard rock or anything. The room is actually pretty quiet (no outside interference). Anyway, any help is greatly appreciated. By the way I'm in Oklahoma and Ill get that in my profile asap. First 4 pictures are from right to left with my back to the straight wall. The last two are from the center of the half circle facing the straight wall. http://img193.imageshack.us/img193/9642/photo1mw.jpg http://img42.imageshack.us/img42/8430/photo2th.jpg http://img856.imageshack.us/img856/8049/photo3ta.jpg http://img508.imageshack.us/img508/4475/phot1.jpg http://img854.imageshack.us/img854/6808/phot2x.jpg http://img37.imageshack.us/img37/9631/phot3.jpg