The fellow who came up with the square foot gardening idea and television show apparently had some sort of issue with PBS and the book publisher. The book and show disappeared and the ideas behind it were not pushed. The website shows the author has been pursuing the ideas and pushing it in other countries, and the book is now back in print.

I really find it to be a great idea. Throwing out preconceived notions opens up new ways of gardening. Building the raised bed is very easy to do, just a few pieces of lumber and some nails. Do not use treated lumber as the chemicals will find their way into the soil. The wood should last you for a few seasons.

As for the issue of watering, you want to add more compost - not less. Compost will act like a sponge and actually help retain water. A good mix of vermiculite also will help retain water.