Recently I tried Emacs and found Evil helpful to keep my vim custom. I\'m used to typing \"jj\" to return normal mode from insert mode like many Vimers do but don\'t know how to
It's a bit more complicated - you have to watch for the previous character. This should do the trick. (the gist is for "jk", you can easily modify it for "jj" though you will note that "jk" is more efficient/faster).