I am no longer a Mac user, but might I suggest remapping the escape key to another, it really saves a ton of time. Personally I use "hh", which makes some vim users cringe, but let me tell you, it's so much faster than escape.
no <Right> $
no <Left> ^
no <Up> <C-U>
no <Down> <C-D>
That should be enough to help newbies to stop using the arrow keys and put their right hands on hjkl as the Gods intended.