our cheat book is actually used by everone, in our office if you create a new block, its put on the server to be shared, then a email is sent out about the new block so everyone can write it down in the standards (that what we call the cheat bool). i also keep a cheat book on our of lisp routines and color charts for diffrent achitectural firms.
Thats the beauty of it...you could start collecting a nominal fee everytime someone wants information on CAD. As a joke, (and my co-workers always find it funny) I say "That will be 10 cents please" after I give them the hint.
(Of course I might need to raise my fees for inflation...)
ive kept a cheat book since i started working in CAD i would be lost without it, especially working with both AutoCAD & Microstation. People laugh, but its them who ask me the questions
i used to keep one by my side when i first started out.
but i haven't found the need for it in years. The HELP menu built in is reliable. Plus there's AUGI, and the adesk discussion group...with all of these electronic resources, i dont have the need...
as I always tell to my students in my AutoCAD training class. Always have a small notebook. for them to be able to remember all stuff I leak.