Hi Frank. Welcome to the forum and congrats on your "new rig".
You'll find a lot of expertise available here to help you out.
You don't have to worry about any special drivers license requirements on a 22' rig in Texas. Their law requires a non commercial Class B if you weigh >26000 lbs but I seriously doubt you are anywhere near that. To anticipate your next question... virtually all state consider you legal to drive in their state if you are legal in your home state.
You might want to post many of your questions in our "Vintage RV" section since your rig is 35 years old.
Best of luck...