This week the co-author of my math for social scientists text, Dave Siegel , released a series of video lectures to accompany the text. They make self study very feasible, so if you are thus inclined, please check them out.
Dave maintains a page with all sorts of useful links for the text.
This prompted me to wonder how the book has been doing wrt sales on Amazon.com. So I visited their Author Central site and was able to eyeball a few fun representations. I really like the trends in author rank for the Kindle edition. The third figure provides sales figures, which are much more tangible than author rank.