Nicky Case created a very neat, interactive game explaining how neurons work.
But the most important concept I wanted to introduce here was exposure therapy, which is part of Cognitive Behavioral Therapy. CBT is basically being mindful of your crappy neural connections, and gaining skills to retrain those connections.
It will take you a while to click through, but if you’re interested in neurons or learning more about neurons, time will fly as Case basically narrates your every move.
In my opinion, the coolest thing about the whole project is the fact that he has made the source code available for everyone to download, which can be seen below.