Aerofan training
Well, I have trained there recently (IR) and I must say that it was a very good set up.
There was one chap that was doing an FI course whilst I was in Madrid, and I don't know about reading "just" a couple of books, but I can say that he was at the school the whole day, in and out of classrooms and he even came and flew a couple of times with my instructor and I, as I think that they encourage FI students to go in as many flights as possible and get some first hand experience from behind.
I do know for certain that FI courses are only taught by senior instructors. I suppose that's fairly logical.