Here's a couple resources for you. I'd help you in a heartbeat except for that whole I live in Austin thing.
Jerry Hamon is a member of this site and is a not only a TPWD Certified Angler Instructor he also teaches the class that gets you certified by TPWD. And he's a great guy.
Even if you decide not to try to get the kids certified (they get cool certificates, pins and stuff)Jerry will help with handouts, Outdoor Annuals, Fish ID charts, and a bunch of other stuff.TPWD Learn to Fish