How to Build a Raised Bed Garden

One of the recurring themes in many of the gardening books I have reviewed is the importance of good soil. I have slowly realized that this may be causing some of the issues in my garden. The soil around my house is primarily clay and rocks. It is actually amazing anything can grow in it.  Before the arrival of some new plants this fall, I thought I would prepare a double-dug raised bed. This is a step-by-step account of the process.