You can find a copy of ISBN 1565291700 [0] on Libgen, or a used print copy on Amazon or AbeBooks etc. The book contains a table of keyboard shortcuts, although I’m not sure whether it’s complete. It’s probably also possible to order the references listed in [0] from IBM, but I haven’t tried that.
The *.boo files linked under [0] can be read on Windows using the IBM Softcopy reader [1].