Looks promising, but the videos don't seem to buffer for me at least. My internet isn't strong enough to play it continuously so I normally just pause videos, wait a few minutes, then try playing them. Doesn't seem to make a difference with their videos for some reason. Any tips?

They're probably using DASH[1]. The video is split into several segments and therefore the player will fill the bufer only until the end of the current segment.

Below each codeschool video you have a download link, so you can view them offline.

[1]: http://en.wikipedia.org/wiki/Dynamic_Adaptive_Streaming_over...

I see that's probably what it is, thanks for the info. I will probably just need to download them.

The video doesn't work if you use HTTPS Everywhere, neither do some of the parts of the interactive challenges.

I went through these yesterday, they are some the best tutorials out there right now for Angular IMO, I recommend anyone wanting to learn Angular to check them out.