The newest book by Emery is filled with his trademark humor and clear explanations. While “Guitar From Scratch” was all about chords, this follows a general progression from chord-based information to single-string playing, culminating in a crash course in reading notes. Beginning with “Stupid Chord Tricks” (the slang of the guitar), then to passing chords, shape-shifting and, finally, single note lines. Reading music is taught with as little pain as possible. Companion sound clips available online. Spiralbound, 86 pp.