Check on the internet under IDPA. IDPA stands for International Defensive Pistol Association. What we do is hold shooting matches where we try and simulate real life situations with card board targets. It is a ton of fun, very informative and instructional, and no one expects a new shooter to do well or know all the rules.
The people are great and eager to help. Dallas probably has a lot of IDPA matches around the town.
All you need is a gun (pistol or revolver,9mm or larger), a holster, an extra magazine (a mag holder is preferred, but not required), eye and ear protection, and a desire to have a lot of fun with a great group of folks who like to shoot.
Here is the IDPA link.
http://www.idpa.com/" onclick="window.open(this.href);return false;
Go to the link, then club info, then club listing, click on the texas map and scroll down to the city of Dallas. Here is one
http://www.dallaspistol.com/DAPS/" onclick="window.open(this.href);return false;
Please be aware that they are listed by city, and like Houston, can have outlying cities names rather than Dallas (ie Conroe and Hempstead are listed, but are just outside the Houston city limits).
Give it a try. I did, and boy, does it help your shooting and your confidence (and you do not have to be a young stud in great shape, old folks like me do alright).