Wish more offices were that patient. In my country you can still find cases were the boss is like hey guys! i bought this new software, i want you all know it by monday, thx, have a good weekend!
Truth be told, i think is very important that everyone achieves at least the necesary proficiency for what they do within the project and you have to sell them the software because you will find resistance, specially from the more advanced Autocad users. I agree with Mr. Podolsky, you making videos would be an extreme waste of time which you should use to develope your template, while your coworkers practices using already made material you can find on youtube or Linkedin Learning (formerly known as Lynda.com) while you serving as a guide. An introductory course of your part of 2-3 hours would be nice to get everyone on the same channel.
for the people with zero experience i also suggest the youtube Channel LearningArchicad, which have a very nice example of modeling the farnsworth house from zero to finish, and it takes about 6 hours worth of video, but it is in spanish, still worth checking out). Of course, i always recommend to read Eric Bobrow and Shoegnomes material, and of course, the Read Us section of onland.info site.
Once the template is set, then the real action begins
good luck!