Which activities constitute "advanced learning techniques" in Rocket Chinese?

I was looking at the way we can earn points and one is by rating "advanced learning techniques." I've earned a few points that way, but I don't know how I did, since I don't know what they are. Can anyone tell me, please? Xièxie。

Go to "My Toolbox". Then go to the "Advanced Learning Techniques" tab. Then read any of the 25 articles posted there and when you are finished with each, you can then rate it. You get 25 points for each article that you rate.

Thanks, Robert!