I have multiple problems with GIMP 2. I start it up, make a new one, pixels all sorted out, color picked, and then, I select the paintbrush, and try to paint, nothing happens. I try many tools, and I cannot draw a single straight line. An suggestions?
You mean you cant draw, or you cant draw a straight line? If it wont let you draw, then it either froze or something else. If you cant draw a straight line, hold shift when drawing.
Okay, you see the black/white thing in the toolbox? Press the black, then a colour pad should appear for you to choose from. Pressing ctrl only applied for picking a colour from the drawing itself, if I remember correct.
If you keep having problems with the basic features, I think you should look up a manual or some tutorials on how to use the programs. Not that I (or people here in general) don't like to help, it would just be easier for you to get all the information quickly if found an instruction manual of some kind.