Over the years I have collected a lot of notes, commands, documentations, etc. I refer to these things often in doing my job.
Memorization of infrequently used commands is just pointless.
It isn't what you can remember what matters: It is knowing where to find it.
I am making these available here for others who may find them useful.
Some of these are quite rough and possibly even nonsensical. I generally don't spend a lot of time making these presentable and professional looking.
Take them for whatever they're worth.