This book has all of the detailed information you need to get your CDL license. It takes you from knowing nothing about CDL and takes you step by step all the way through getting your commercial drivers license. It takes information from over 20 years of training and testing and combines it with the current CDL drivers manual. It puts all of the information into layman's terms and organizes it into a logical order which is very easy to follow each step and very easy to remember.