My first plane (and kit) was a Kadet MkII. Instructions were clear and complete, kit was easy to build and the plane flew itself. Shoulda continued to let it fly itself, when I took over it was all over the place. Really, it was a wonderful plane to learn on, is an older design but well-proven. A Seniorita kit or an LT-40 would also be a great 1st kit and plane. I've also built Sig's 1/5 scale J-3. It's a bit more complex than the trainers, but it was really fun to build and very scale, flies very nicely. I got about a season out of my Kadet before mid-airing with a 1/4 scale Cub. I lost.