I've examined over 50 books on snare drum instruction and this is one of the top two. Good modern quality and sequence of material. 39 lessons and 23 solos. 2-line combination studies for each lesson (good for duets). Counts and sticking indicated in light gray. Nice illustrations for each new rudiment. Roll is introduced in Lesson 17, 5-stroke in Lesson 18, 9-stroke in Lesson 19, 13- and 17-stroke in Lesson 20, flam Lesson 27, drag in Lesson 34, ruff in Lesson 35. Minor nitpick is that you need to skip around to get rudiments in a better order. Also, it's missing the single stroke rolls and paradiddles! Brief bass drum and cymbal technique. Great value for the money.