There are plenty of people involved. To Betty's question, Geoff has been to Texas. You can see a picture of him here
http://workingwithnature.org/nicholas-burtner.html with Nick Burtner. Nick has classes in and around Dallas and will consult with you one-on-one by appointment. I have not worked with Nick. I am simply reading from the site and posting this opportunity for you to investigate.
Another tool to DIY is watching Peak Moment TV on YouTube
https://www.youtube.com/user/peakmoment
There are 30+ videos for catching rainwater, building with solar power, composting toilets, recycled materials, eating/buying local, networking for resources etc. I will admit, most of the people in the videos are in OR, WA, CA or Canada; however, the information translates to our region in Texas. I am originally from Commerce (area) and it's not easy working in black, sandy or clay soil. I do know that you can make improvements to the land one step at a time using compost, natural fertilizer and irrigation from your gray water.
I am currently working overseas, but can't wait to get back home to Texas and garden for fun, flowers and food!
