Every US state writes its own driver handbook and its own permit exam. The federal Manual on Uniform Traffic Control Devices keeps signs consistent, but states still set their own speed limits, learner-permit ages, BAC thresholds, and graduated-licensing rules. Pick your state below for a link to its official handbook.
Whichever state you study, the underlying skills are the same: recognize signs by shape and color, know who has the right of way at every kind of intersection, understand how alcohol and impairment affect driving, and learn how to behave around school buses, emergency vehicles, and vulnerable road users like cyclists and pedestrians. CDL Workbook covers all of these in its study guide, road signs catalog, and traffic laws sections.