There are many studies that discuss learning as a tool to avoid mental diseases as you grow older. Learning a new skill or language supposedly decreases the risk of contracting Alzheimer's disease substantially.
To start with, I've included resources for beginner programmers, writers, and Japanese students. I moved the Japanese section to be a main section as there is too much information I want to put in there!
This area of the site will continue to grow. If you have any suggestions for areas you would like covered, please email me.