The last time I complied a bunch of Tevis links and information, it was well-received, so here it is again, with some new/updated additions.
My Personal Tevis Write-ups (Riding and Crewing):
Main Tevis Website (for ride information, entry forms, rider list, and more)
Tevis webcast (will be updated/live on ride day)
Endurance.net coverage on the Events section
Videos:
YouTube playlist of misc Tevis-related media
The Tevis Cup YouTube channel and secondary channel, which also has some good playlists
HRTV’s “Inside Information” feature on Tevis
A Japanese documentary filmed in 2019 (Much of the narration is in Japanese, but the interviews are in English, and the cinematography is stunning and it’s very professionally done. It is about an hour and half long, so allow time for that but it’s well worth it.)
Go Pony • Go the Distance 
This wwas great to read