We are not going to give you a complete HyperCard programming manual here. Instead we're going to lead you to the script window and teach you about three things:
MESSAGES, OBJECTS, and HANDLERS.
If this isn't what you wanted to get out of OPEN STACK -- if you don't understand this gibberish (and don't want to); if you want to start entering your collection; if the library system itself seems complicated enough without getting into all of this stuff -- please go back to the DIRECTORY and go to the INRODUCTION screen. Remember to set the preferences button to "Write" first, to make sure you don't hurt OPEN STACK while you're experimenting. Or else continue...