I assume you mean for the CC?
If so ISC2 has produced the textbook and it looks like is just the courseware outline in digital form. It costs 19.95 USD. If you took comprehensive notes it’s likely less useful.
The study guide Is produced by a third party, is physical, probably covers more and is more expensive by the looks.
You might also consider the CISSP Study guide as that will certainly cover all of the CC material and provide you with more infomation.