Permits are easy if you have a clean background. Just take the class, give them a full set of fingerprints, and enough background info to find you in a blizzard in Montana in February!
You can legally carry a rifle or shotgun, loaded or unloaded, concealed or open, at any time.
We just left there last November and ran to WA for some relief from the heat! (Actually, we're from here originally and love the mountains and Puget Sound area.)
Good luck in Big D! It's a fun place.
I forgot, the Collin County Gun Range off 380 in McKinney is a good place to shoot. It's an outdoor 100 yd. range and you can rent full-auto there. Also, the Bullet Trap in Plano on Ave. K (Plano Road) between Park and Parker has a decent indoor range. I bought my Kimber Pro Carry there and got a fairly good deal. They tried to talk me into a 2nd one, but I told him my wife would shoot me with it! He said, "that's why we rent lockers!"