It's alright and welcome, I also encountered this kind of problem in my first try. But with some research and practice you can solve it. There are many tutorials here that you can refer to. Let me take a look with the PDF file that you have made, hopefully I'll be able to help you somehow.

One question though, do you already set a script for your level? if you don't know how i can help you with the basic programming stuff for you to be able to run and also view your level.

WED doesn't require any driver, it will run out of the box assuming you have already met the minimum system requirements.