Well the videos seem watchable via youtube as well. My favorite and easy-to-use script for ripping youtube videos is "youtube-dl" which works on the command line. Great little utility:
http://rg3.github.io/youtube-dl/

Two courses started this Monday.
One is about haiku, and one about management. I'm following both for now.

A new course on using Evernote to study efficiently has started today:「Evernoteで広がるgaccoの学びスタイル」
I haven't signed up yet, but based on the about page it doesn't seem too difficult. ga038 if you're interested.

Edit:

Also apparently there is an English user guide now at http://gacco.org/pdf/guide.pdf