I just started working there and I have been having trouble learning the correct buttons and I am worried they will fire me if I don't learn them faster. I have been looking every where for online programs that don't give me pictures of tills from 1995 and training videos from 1980. This is my first job and I don't want to blow it so could any one please give me a website link or give me a picture of the new tills so that I can at least look at it.

That's great that you're taking the initiative to try training outside of work. But they should be training you there. Talk to your manager and see if there's a training mode. Usually when people see that you're at least making an effort, they'll be more patient with you.
Or, is it possible to take a picture of the screen? And then study it?