I use a Macbook, a PC, and then also Windows when it’s running on my mac (through remote desktop). I also use keyboard shortcuts like my life depends on it. These are not standardised across the various platforms, and it’s been driving me crazy when I press certain keys expecting the cursor to move to the end of the line, or whatever, and suddenly it disappears to the end of the file. So I’ve worked out what keys do what in each OS, and made a table.

Yes, this makes me an awful geek, but it will save much of my sanity. I hope that this helps you as much as it will help me!