If you follow the pics closely you can see what is going on, admittedly its not the most detailed of tutorials but stick
with it and read wat errors, if any, the script editor gives you and try and find the fixes, they shouldn't be too hard to sort out due to the fairly simple commandds its trying to show.

I would give the tut a go myself if I had access to Maya at the moment.

Just keep trying I guess lol.

Chris