Sean & I took ours at Red River Firearms in Sherman (2926 Texoma Parkway
Sherman, TX 75090-1906 (903) 893-8449).
It's a drive for any dfw people but they are all inclusive (everything done on sight, classroom, shooting, photo ID..) and it's done in one day. They have very good instructors and have one of the nicest indoor ranges I've shot at.
Qualify with a semi auto.
Practice shooting before taking the test.
Get your state paperwork out of the way before taking the class.
Don't go unprepared. Bring proper ID, note pads, and gun/ammo (you can also rent these).
Don't get distracted and lose focus. Pay attention to what the instructors are telling/teaching you.
Don't try and throw your mac down to the lady mayor sitting next to you.