Dude, most of your questions can be answered by going to a hobby shop, talking to the staff, opening a kit and looking at it. you will find that there is quite a bit to do in building a plane, but none of it is hard and all of it is very enjoyable. You will understand then why people keep telling you not to try to scratch build one. Its not just slapping a board across another board and making the shape of a plane. There is more to it, and that is what makes it fun! Lots to learn and do in the hobby.