I use vim as my editor of choice, and can only offer advice for that, but most of this should carry over to most editors.
Most of the keybindings in vim I just had to relearn. A `w' still
moves forward one word at a time, but now it had moved from my left
ring finger on the top row to my right middle finger on the bottom
row. This, and things like it, I just had to deal with.
However, a couple choice remappings have saved me hours of headache.