I think the idea when getting into jazz, or anything else that might be new, is just choosing one method(there are many) and stick with it. Then supplement or go through something else.
The book is fairly comprehensive in that it deals with a lot of drummers and deals with solos. It's not a step by step how-too book. It's a historical biographical style study.
I just went back to the Blackley book myself.
Solo transcriptions are fine and I'll eventually go through more, but I like what I like IYKWIM.