There are a variety of good kayak fshing sites on the web. Some are local area focused (like the Texas one you mentioned or the one I use here... norcalkayakanglers.com). Google around a bit to see if maybe there's one closer to you already.

Also, be sure you read up a bit on safety gear. Your voice will wear out QUICKLY if you're overboard and can't get back in...but a Fox 40 rescue whistle will make noise that travels a LONG ways. Many of the fishing sites have lists of safety gear that you can modify based on where you fish, if you're solo or with buddies, weather conditions, etc.

Welcome to the fun.