Okay are you confused ---- don't worry about it! Learnist is a new product that lets users take educational content from websites such as YouTube and Wikis and post them to a board. The product is similar to Pinterest. The site's format, according to its creators, helps prevent against misinformation found on websites yet still gives users access to resources they need.
Check out the article "Grockit wants to build a Pinterest for Learning" at http://mashable.com/2012/05/23/learnist/.