If you're here in Harris County, your polling place is listed here; just click on the link towards the top left of the page and it will take you to a loooooong list.
There are 11 amendments to the Texas Constitution on the ballot. This site has a conservative view of them. Moreover, if you click on each amendment it opens a window with a more detailed description and a short "pro" and "con" argument. Very helpful.
And if you're of a right-leaning disposition and still don't know who to vote for, the Texas Conservative Review has endorsements for city council and controller, as well as grades for the mayoral elections. Pages 3 and 15 are what you want if you're in a hurry.
Get out and vote! And don't forget to bring the kids with you; nothing says good parenting like bringing the little nippers along to help you participate in democracy.