Unfortunately, there isn't much in the way of ASPECT resources. There were several Procomm books written over the years, but I don't believe any were written for recent versions of Procomm, and I don't think ASPECT was covered in much details in any of those books. Quarterdeck released an ASPECT manual, which was basically a printout of the ASPECT help file. However, Symantec does not sell this book and I have not seen any copies for sale (I find mine very handy to read instead of flipping through the help file).
As for Internet resources, I think this forum is just about it for ASPECT. My recommendation would be to use Procomm's script recorder (Tools | Scripts | Start Recorder menu item) to record the steps you need to perform. You will have a script that consists of waitfor and transmit statements. What you will want to do is modify the recorded script such that a text of string (a username, for example) is replaced by a string variable. You can then modify your script so that it either asks for a username when it is run or lets you pick from a list of username, and then performs the recorded actins on the specified username. Hopefully that gives you some ideas.