Pat yourself on the back - you've made it to the end of this tutorial!
We covered some more of the standard programming concepts such as if statements, switch statements and loops.
We learned how to catch an error and present a friendly message back to the user (so as to not scare them off).
Among the advanced topics were cookies, which enable us to "remember" a user by writing and reading a file on their hard drive. We learned how to present the date and time in a nice format, then finished off with arrays - another standard programming concept.