Lots of people got 80% of the way there with one of those keyboard templates -- a plastic overlay that fits around your function keys and tells you what it does

Lots of people got 80% of the way there with one of those keyboard templates -- a plastic overlay that fits around your function keys and tells you what it does by itself, and when combined with Shift/Ctrl/Alt, and in the margins explains some other useful keys. But it's easier to learn by word of mouth -- when everyone around you is using it and you can ask the person next to you. Obviously that route doesn't work anymore! So people might actually read the manual.