There are many free resources on the Internet, we know this; the ones known as Open Educational Resources: (OER's) comprise educational material that can be freely used by anyone without any copyright restrictions. An OER can be anything from a streamed video like this one showing the sand casting process to this link to an entire course on Anthropology
The sandcasting video, is from Process Arts, managed by Chris Follows at University of the Arts London (UAL) email@example.com
Process Arts focuses on "making" in art and design . This site shows insights into the acts of making and encourages users to share knowledge and experience online. You can go there to explore traditional and contemporary creative technical processes , and see work and the processes involved in its making online through video, text, image and sound .
here are the most viewed items from Process Arts. Look to the right of the page for a full list of Resources
Interesting courses including bibliographies, online texts and images etc are available from the MIT site where the Anthropology course linked above was taken from. Courses include many other subject areas of interest such as media studies, history, literature, music and theatre arts, women's and gender studies. MIT is the Massachusetts Institute of Technology whose mission is "to advance knowledge and educate students in science, technology and other areas of scholarship that will best serve the nation and the world in the 21st century".