What website can help me learn what parts of the brain do what?

This looks good.

link

in what sense do you mean? @FutureMemory‘s link is pretty good for a pretty overview however if you have a specific question you might need something more defined.

Looking at sites about Brain Injury is a good way to learn, also. They are mostly written with people that are not Physicians in mind. Many of these sites offer an overview of where certain things are controlled in the brain. Unfortunately, though, you will get stuck looking at advertisements for lawyers. If you need more in depth info these sites probably won’t work, but for basic info they’re a good place to begin.

www.brainhealthandpuzzles.com/brain_parts_function.html