If you’re still interested in taking the CSCS exam and/or are studying for it, here is a great study resource that helped supplement the book and practice tests.
Someone took the time to create virtual note-cards on pretty much the summary of the whole book. I think you can print them out (which I did when I was still an undergraduate) and used them to quickly get a gist of the materials.
If you don’t know what the CSCS certification is or want to know more about it, check out my blog article I wrote about it here.
Anyways, good luck on your endeavors!