If you were going to give a friend lessons to get his PPL, what ground school would you all recommend? i'm gonna go do a couple flights w a CFI to get the maneuvers down again, but I don't really have time to teach him ground school from scratch. Obviously I'll recommend SheppardAir for the written test prep, but you've still gotta learn the knowledge...esp for the PPL. King ground schools? Anything else?
Also, what have you all used for a syllabus when giving instruction?