I think running a successful social enterprise is largely similar to running a successful vanilla for-profit.<p>That said, I found the How I Built This episode with Perry Chen from Kickstarter quite insightful on the social enterprise topic: <a href="http://pca.st/episode/dbc5c113-aa4d-4d68-8da0-0befdf6809f8" rel="nofollow">http://pca.st/episode/dbc5c113-aa4d-4d68-8da0-0befdf6809f8</a>
Try "Pencils of Promise" by Adam Braun. I've not read it myself but I've heard good things about it. pencilsofpromise.org might also be worth checking out.