Is there someone in your life who really needs to understand transit better than they do? Do you secretly wonder if you understand transit well enough?
My friendly, readable book Human Transit may be what you're looking for. Over in the sidebar to the right you can explore the introduction and contents and decide for yourself.
This weekend only, you can get the ebook on sale, for the ridiculously low price of US$7.99! Find it at Island Press, Barnes & Noble (Nook), Apple, or if you prefer, it's also at that other gigantic company. In whatever form, I hope you enjoy!