Nail guns are dangerous things apparently. Can't imagine why lol. The guy at the shop did say read the instructions as the are unforgiving and you only get to have one accident.
The walls will be built out of a combination of 1 by 2 and 2 by 4. The trick will be sorting the ceilings. I am going to start in the mess as the holes for the wood are al in place as it was already wood lined. Once I get a few in place I am sure I will learn quickly.