Recommended books/tools to learn about self-storage investing

[Ann Marie Giglio]

I own a commercial office space (and operate a business in it) and want to focus future investments on self-storage units. I want to understand the numbers which are diff from residential and other commercial. Does anyone have a favorite book on the business?  Quick Amazon search pulls up Dean Brown, Jim Ross, and  Dean Brown.  Thumbs up or down?  Any others?  Thanks!