ID and code, need some basic help

So trying to make a menu that links to each section on the same page. Apparently I have to make a one-page-setup according to this KB article:

The article offers a lot of code that has to be put somewhere. I have absolutely no idea where to put this code. The article doesn’t help me, because of this. I run into similar problems with articles a lot. The problem is a lack of knowledge on my part, is there anywhere I can find some basic information about using this theme? Also, obviously, I’m pretty new to Wordpress in general.

Hi There,

Thank you for writing in, please read and watch the instruction I’ve provided on the thread below:

Hope it helps,