I am pretty handy at most things but I somehow cannot grasp the concept of drywall work. So that being said, does anyone here do it?

The Job:
I need a few things done. I have a room that is roughly 20x15 that needs to be retextured. I think it is a stomp texture. Within this room the previous owner removed a door that went outside and his patch job was horrible so I need that sanded down, repaired, and patched again. Also, again the previous owner removed a wall and did another horrible patch job on the ceiling, this needs to be fixed and probably the whole ceiling retextured as well.

Any guesses on quotes? I am willing to help wherever I can, and I am getting new carpet after this is done so cleanup and prep work should be minimal.