I'm willing to help in any way I can, but I don't know of many articles or publications about customizing SketchUp via Ruby. I've done my share of scripting, but I just don't know of much written about what we rubyists are doing. There are some discussions on the old SU ruby forum (and some here) that get into some technical issues, but I don't know if that will meet the criteria for the types of sources you need. Feel free to contact me through Smustard if you have any specific questions. If I can, I'll be happy to help.