All the content you need, and only the content you need. It is so nice to go through this material with out all the extra fluff that authors and producers usually feel they need to add.
Instead of sometimes thinking "Do I really need to know this?", you will be thinking "If he is saying something, I need to know it".
If you were taught this way face to face, it would be information overload, but given that you can pause and replay at will, it is a fantastic approach.
Also, the content is loaded once, so you don't need an Internet connection to access it, and they kept it at 1.2gb.
Well done!