Have you found our wintersowing forum?
http://cubits.org/Germination/...
None of the garden forums are as busy now as in winter; gardeners are out gardening I guess.
Also, for the most comprehensive "how to", don't miss Trudi Davidoff's site
http://wintersown.org/
If you start at the FAQs, you'll have a good idea of what it is and what we do
http://www.wintersown.org/wseo...
I've been wintersowing for 5 years and I think milk jugs absolutely make the best containers. You could start to collect them now. Also stock up of potting soil by fall. It's harder to get in winter, though probably easier for you in Texas than me in Ohio.
Karen