Shop is one of the best commercial digitizing programs out there.
I started using it when it was EDS IV having never really dabbled in
EDS III (window 3.1, I don't think so). I am slowly accumulating
enough videos to put together a digitizing training DVD focused on
using the Design Shop digitizing software. There are two other
digitizing training series out there, but both use a different
software. Both are very good, however life is so much easier
being trained on the software you use (wouldn't you agree?)