I try to wrap my head around the VIM editor since a few months. Unfortunately I do not have enough discipline to use h-j-k-l as my movement keys. But there is a solution that will teach me..
I found it deep inside the .vimrc of my colleague Fabian.
nnoremap <up> <nop> nnoremap <down> <nop> nnoremap <left> <nop> nnoremap <right> <nop> inoremap <up> <nop> inoremap <down> <nop> inoremap <left> <nop> inoremap <right> <nop>
This turns off the arrow keys. A really obvious way of doing it ;)
I will add this to my .vimrc right away!
Wish me luck!