For strictly hunting, Bowhunting Trophy Whitetails has some thought provoking ideas/practices...and a good section on bare shaft tuning. I modified some things I was doing after reading it. However, for just flat out tunning/maintenace I dont know of anything that is amazing. I would suggest getting with a target shooter and reading on AT (avoiding all the white noise) for trouble shooting issues. Hands on is the best way to go with most of this stuff.