I don't, but would still like to recommend Mel Bartholomew's Square Foot Garden. It's a great book and he has a website as well. His approach to plant and seed spacing is easy to understand and very effective. I prefer organic techniques over some things he advises, but layout wise I think he's spot on.
For beds I went with a modified Hügelkultur concept. Instead of building above grade only, I went down a couple of feet into my heavy clay soil and placed logs and branches in the hole. Untreated local white oak makes up the foot above ground, except for a few I made with Eastern Red Cedar logs I'd cut around the place. The growing medium is leaf compost mixed with the dug soil. These beds take a lot of moisture from the growing medium when it's wet, and stores it in the wood beneath. When it gets dry above, there's plenty of water for plants to reach for. It's been working great for dahlias and some herbs over the last three seasons. I've made plans to convert to mostly food production this year.
One of our upside down dahlias: