The Big Book Workbook is intended to be a study aid while reading the Big Book of AA, and can be a helpful tool in accomplishing your goal of recovery.
The book is very detailed and used as a supplement to study each area of the Big Book, so it’s used in conjunction with Big Book of Alcoholics Anonymous. (Get your Big Book first… you’ll be lost without it!)
This is an excellent tool for sponsors to help guide their sponsees to study and learn the Big Book. That said, one might be just as well off to use an online Big Book study resource if both the sponsor and sponsee are amenable to that.
If you prefer something to hold in your hand and to write in (like I do!), this book is a pretty good choice for Big Book study.