A revised version of "Technically Challenged", along with "A Clueless Coach's Companion" have just been uploaded here:
http://www.chiefdelphi.com/media/papers/2019. I had intended to release a trio of rookie resources together (the last is a step-by-step builders' guide), but the last project won't get finished until the fall when our family returns home from overseas, where our Vex equipment is. After the recent announcement, I realized that these documents (prepared in late spring) are quickly on their way to obsolescence.
I have to admit that the increasing unlikelihood of Vex being continued has put quite a damper on any enthusiasm I previously had; I apologize for the artificially euphoric tone in the writings, but they were written during happier times. While the likely discontinuance of Vex makes it less likely that I'll be recruiting rookies this year, I hope that the documents will be of use to someone.
I'm attaching a sample from "Robot Recipes" (the builders' guide) -- if you have a project that you would like featured, I'd love to include it. I'm hoping to list all projects in similar format.