Hello. These two books can help. Mezlikin - all modes, aerodynamics and controllability. Taradeev - construction. However, everything is in Russian. However, today this is not an obstacle. I still know the publication Wieslaw Sier - Miniature Aviation (Poland). The book is old, but will always be relevant. There are ready-made drawings of simple radio-controlled aircraft. Sincerely yours and good luck!