OK - So I recently downloaded GIMP 2.8 into my computer, thing is, I have no clue how it works. The only thing I know is putting images ON and erasing, that's it. I will point out though, I didn't just do it for 5mins then give up, I tried it on my own for 3hrs straight and I just can't figure out anything. :/

 If any of you could give me tutorials on how it works, I'd really appreciate it! 

http://www.gimp.org/tutorials/