Don't worry, I'm not going to do my own advertising
So I'll just take the liberty of saying that @LucasFilmGames (on Twitter) is writing a real bible on the subject containing hundreds of interviews, visuals, and so much unreleased material that it's indecent. (On the other hand, no idea of the release date).
EDIT :
Oh, and I wasn't saying that to discourage anyone, on the contrary. I am in a position to say that as long as there are people writing about LucasArts / LucasFilm, and there is love for these games, it can only be positive !!