VIM is amazing, the best text editor available. I have written everything from bash code to a PhD thesis using it. There is a really nice graphical cheat sheet available here http://www.viemu.com/a_vi_vim_graphical_cheat_sheet_tutorial.html but there is no UK layout. I have edited it for the UK, download as pdf or svg
Interesting and useful things that I have found out and want to share.