I heard from a very reliable sourcs that there aren't any fish in Texas because the illegal aliens stold them all!
... just kiddin' ya.
I take it you have a boat and fish finder? If yes, read this... especially the part about the thermocline and how to find it.
Find the Thermocline using your Sonar Fish Finder
Once you find the fish, all you have to do is make them bite... that can be a hard job to do sometimes! A live wiggling minnow just above a Crappies head is nearly irresistible. There's also ling line trolling jigs and crankbaits, do a site search for both and read about them!