What and where is "Chess Mentor"

It appears chess.com has a " chess mentor"  feature for premium members. I wanted to check it out before I upgrade. But where is it? I thought chess.com traded the "chess mentor" concept for videos. But it it seems to include coaching as well. So where is it (doesn't show up in search functionality)? What is it?

I think they re-labelled it to "Lessons" . It has everything with the lessons and videos etc
i should also add that its a very good resource

Fair enough. Thanks bro.  My question is based on a misunderstanding. I read a sticky by D. Pruess, but did not notice the date: 2009 lol.

Maybe that sticky in "Lessons" section of this forum, ought to be replaced by an updated sticky, if chess.com still cares for this project in terms of updating and refreshing.