Dr. Lin @ UCSF puts together a great blog with up to date resources. She is famous for her info cards for EM called "Paucis Verbis." Check those out HERE.
This blog is a great refresher and review of how to approach the elderly patient with "Altered Mental Status" which is one of the most vague, yet common chief complaints we see. It is the essence of emergency medicine, as it is a complex and concerning complaint and the most "undifferentiated" patient presentation you can get. Take a look at the blog HERE.