I had a Mac myself, so I'm not very familiar with the Archimedes version, but I have played it when visiting friends back in high school.
I don't remember whether it has any keyboard shortcuts, but to my knowledge, most versions of the original game did not have keyboard shortcuts for selecting skills. (The Mac was one of the few that did -- Z and X for selecting the previous and next skill -- but these were undocumented features that were left for the player to discover for themselves, along with fast-forward and walker-only select.)