Sometimes I am sent a good website link by a friend or find one by chance or while reading something.
Here is one I have found to be interesting (if you have time) and informative. With some of them you can sign up to have updates sent to you regularly when they post new material.
Here is one I find interesting:
Everyday Cheapskate
http://www.everydaycheapskate.com/
Do you have any to share?