Etsy has a YouTube channel where they have all kinds of profiles of their users and how-to guides. My two favorite series are the Process series (e.g. New Books with Old Materials & Tin Toys) and Handmade Portraits (e.g. Armor Guitars & Wood Mosaics). In the description of each video there is a link to the corresponding entry on Etsy's blog, The Storque. The blogposts have more information on the users and sometimes further links and videos. [via Work in Progress]
The Speculum theologiae is a beautiful medieval manuscript. Its diagrams demonstrate visually various aspects of the medieval worldview. The diagrams are explained and translated and most of them are expounded upon in a short essay. My favorite diagrams are The Cherub with Six Wings, The 10 Commandments, Plagues of Egypt and Abuses of the Impious and The Tree of Virtue and The Tree of Vices.