I am working on a guide that has info on starting and running a trucking business.
FMCSA is a good place to start to figure out what you need regarding permits for your state and other states. Also, check with your state Dept. of Motor Vehicles regarding any special rules and regulations.
Federal Motor Carrier Safety Administration https://www.fmcsa.dot.gov/
DispatcHER helps with questions and other services that involve trucking. Contact 4kidz4jobz@gmail.com