I would recommend Get Better Sound by Jim Smith. I have found his book and dvd to be invaluable in setting up a system for best sound. Jim was a dealer/distributor for Avantgarde speakers and achived many Best Sound in Show awards.
Speaker positioning toe and tilt
How does tilting a speaker effect the soundstage and bass response? Also, how does toeing a speaker in directly towards me effect bass as a result of a rear firing port now reflecting closer to the back corner of the room?