Click buy button next to hamburger. it will slowly give you money. after, you can get more hamburgers to get more money. after you get enough you can buy other stuff.
it IS turing complete! all things computers use can be stored as numbers, and register gives you memory capabilites. Logic + Memory = Turing Completeness.
A reset button is a good idea, yeah. As for the second suggestion, I really have no good to way to do that. It's not too hard to change the text, or is that just me?