A Wee Bit on Word Formation 

This is a shorter video (by Anthrospin standards) and goes over several of the methods by which words are created. Maybe it doesn't sound so exciting, but there's a lot to it, and etymology is a big part of linguistic anthropology. It includes derivation, compounding, blending, clipping, acronyms, borrow words, calques, and back-formation.
It's not exhaustive by any stretch of the imagination, and feel free to add to the list or ask your questions below!
This video doesn't go over the shared history of languages, but I recently posted a blog entry on that topic, which you can read here:
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