Texas Primary Information

In Presidential Race, Winning The Texas Vote Will Be Difficult And Costly (But Worth It)

How Does the Texas Primary Work? from Lone Star Project (scroll down)

Everything You Need To Know About the Texas Delegate Process, Part 1

Everything You Need To Know About the Texas Delegate Process, Part 2

There is No Such Thing as the Texas Primary Part I

There is No Such Thing as the Texas Primary Part II: Delegate Predictions
(This last one is done by an optimistic Obama supporter, but has demographics and maps worth looking at whomever you are for.)

Finally, once again, the single best source to learn about how the process works is at the Texas Democratic Party's Convention Page at this site, which includes links to useful things like a printable pdf on how to become a delegate.