Please link a tutorial
A tutorial for what exactly? Processing? If so look up daniel shiffman on youtube, he's got some great processing tutorials
Sorry, I wasn’t clear enough, I meant a tutorial for the shell.
I made this myself and didn't use a tutorial. I don't think there are any tutorials for this sort of thing since its so obscure, but I suggest trying to get a basic window environment working first if you want to work towards an operating system shell.