Things every New Zenner needs to know

[kuroi]

does that mean I need to copy/add the css and images folder into the CUSTOM folder as well? ideally from the classic/templates folder?

You don't need to no. The stylesheet is probably a good idea, and there is a lot of structure embedded in there (but when I'm feeling brave I start with an empty one and build from the ground up), however you would only copy the images if you wanted your template to look like the classic template, otherwise you'd create your own.