There are lots of different threads for this plane out there. Type in "commenced" and you'll find one that's very helpful. I just finished the kit myself and the plane is great, fun to fly. One upgrade that you really should do is to put some extra ply material to the area of the fuse above the trailing edge of the wing as it tends to crack on hard landings. Lots of other things you can do but don't have to. You can tint the canopy, sheet the turtle deck, build a nose cowl, add about 1" to the rudder. Have fun. It's a great plane.