Philanthropy knowledge and tools clearinghouse

The Johnson Center for Philanthropy has created an online marketplace of knowledge and tools about philanthropy, designed to change how learning happens in that subject.

Very much an American site, at http://learnphilanthropy.org, but bound to be something of interest to grant makers elsewhere (from news item http://philanthropynews.alliancemagazine.org/2014/09/21/learnphilanthropy-org/).