ELIZABETH, NJ—Rock The House In 30 Days, a beginner-level guitar-instruction manual published by Elizabeth-based Learn-2-Play Books, features superstar rocker Eddie Van Halen in the midst of a raging guitar solo on the cover, and such traditional, public-domain songs as "Go Tell Aunt Rhody," "Greensleeves" and "Little Brown Jug" inside. "Get started on your way to playing awesome, brain-frying guitar solos like the master shredders," the cover proclaims. According to music-book collectors, the contents of Rock The House are identical to those of the classic 1943 guitar-instruction manual Strum Gaily The Mel Bay Way.