Last year I taught a workshop called "introduction to chord substitutions" at most of the festivals I taught at. If you attended that workshop, you should have a link to a page containing some support for that. But I am in the process of doing an in-depth series introducing a couple different methods for incorporating substitutions. It will also include some arranging tips and discuss how you can use the circle of fifths to help you derive substitutions.
My camera bit the dust while I was originally recording this series and then I got side tracked and started recording other videos. I've replaced my camera and plan to release this tutorial soon. The result of the series will be the arrangement played in this video.