The content is made of hours of video lessons about game development. 2D, 3D, networking, game logic, art, Unity, 3DSMax... I have yet to check all of it.
You can browse it here on 3DBuzz website.
Or you can use and seed the torrent made by redditors.
RIP Jason Busby, thanks for the work done, and thanks to your family for deciding to release it for free for the internet.