Guitar Tuning for the Complete Musical Idiot
There's nothing more distracting than hearing a musician play out of tune. This user-friendly book/DVD pack teaches various methods for tuning guitars – even 12-strings! – and basses, including a section on using electronic tuning devices. Also covers intonation, picks, changing strings, and much more!
The Complete Book on Tuning, Strings and Intonation
by Ron Middlebrook