We live in your area, and my husband who took and passed the test in Easton, MD is currently recovering from major surgery otherwise he'd be happy to help you as I know we had to take one of the farmers with us who lived close to where we live in order to take the test.
Be aware, unless Annapolis is diff, Easton, MD was NOT prepared to give him the test and there was a lot of running around on MVA's part to try and figure out how to give the test, which started out with a check list. Hopefully, this has improved as more people take the test. It's the right thing to do for vehicles which weigh over 26,001 pounds. There is a written part and an actual road-driving test portions.
Good luck, you'll do fine.
R&P
Centreville, MD