This book will definitely test your speed and shred skills. The first few lessons are fairly simple, but then it dives into hypermode with blazing tempos, insane arpeggios and more. It is not for beginners, but it certainly will help you improve much faster. After even a week of practice it will become very noticeable. Shred guitar not only teaches rock riffs and styles, but classical as well as blues. A must have for any devoted or aspiring shred guitarist.