Chisel,
As I mentioned earlier, start with
Square Foot Gardening (click the "How to..." link on the left side of that web-page) to learn where to put your garden and how to prepare its soil. Following this method you don't need to worry about fertilizing which is a very good thing. If you read only one site make it this one. Lots of pictures and simple diagrams!
For what to plant when in Houston, I use
this site. It's a gardener here in Houston that has month-by-month lists of what to plant, what to harvest, etc... This data is appropriate for most of the gulf coast and east Texas areas. Other areas have heat/water issues that would require some experimentation.
Next, we have
Neils Perry, the Texas garden guru. His faqs on Texas gardening have a lot of info. You might also want to sign up for his free electronic newsletter. I find he's more of an "old-school" gardener that relies on a lot of fertilizer, pesticides, etc...
For basic gardening information check out
. IGarden Time Online They cover EVERYTHING though it isn't Texas-specific. The basics do apply everywhere though.
For help with designing an "edible landscape" check out
this garden forum.
Good luck and may the Farm be with you.
-Blast