Download and study your state's CDL manual. These CDL manuals are free, and when you combine studying your state's CDL manual with our free online CDL practice tests it will make passing the written portion of your CDL exam much easier.
But did you know we've put together an incredible CDL Training Program which has everything you'll need to pass the CDL permit test and all of the endorsements? It has the entire CDL manual built right in and we've put several thousand students through it already. You should really take 5 minutes to check it out. It's a great program, and it's free!