ShareMyLesson. BetterLesson. TeachersPayTeachers. How can an educator chart a path through the landscape of online content marketplaces and platforms? And where will Edmodo Spotlight and TES Global's new marketplace fit in?

This week, grab your compass and come along as EdSurge CEO Betsy Corcoran gives us a guided tour of the world of content marketplaces—and offers up her perspective on what makes a content sharing platform stand out.