If you’re serious about modern drumming technique, Syncopated Rolls is worth owning legally — the tactile experience of working through the etudes with a pencil and practice pad is part of the method. A scanned pirate PDF often has missing pages, faint noteheads, and no support for the author’s estate.
The book's primary goal is to help drummers interpret musical lines using rudiments rather than treating them as static exercises.
Drumforum.org and the Cymbalholic forum have classified sections. Post a "WTB" (want to buy) ad. Expect to pay $100+.
A low-quality PDF is worse than useless—it’s frustrating. You cannot learn syncopated nuances from a blurred image.