We have legal agreements with music publishers that lets us offer song lesson videos, but unfortunately they don't let us offer notation printing. We can offer the notation online, but can't offer users a way to print it out. I know that's frustrating, but that's the rule we need to follow.
To make it easier to view notation along with the video, we added a link that opens the notation in a new window, so that you can have the notation and video side-by-side. This link is on the notation tab right above the notation.
For non-song lessons, you can print lesson notation by clicking the print button in the right-hand sidebar.
Let us know if you have any questions about this!
Ben