Back at the end of 2005 I presented a class at Autodesk University that attempted to cover a door family. It was too aggressive in scope to fit into the lab session but I think it was a good subject nonetheless. I've posted the handout
HERE for anyone who might be interested in it now.

I get an email now and then asking about it and decided after getting another today to post it which will hopefully make it easier for people to find it.