The Metropolitan Museum is one of the most notable proponents of art education in the world. If you are looking to improve your knowledge of art, but can't afford to buy your reference material, this is one website you absolutely need to visit --- MetPublications.com
MetPublications is continually adding to their data base of art catalogs and books. Currently there are 422 books and catalogs available for free download, as well as more than 400,000 free art images. So browse around, learn something new, or find inspiration to teach others.
As Longfellow said, “The love of learning, the sequestered nooks, and all the sweet serenity of books”
Here is a selection of titles that caught my attention: