I think a discussion on what varience is and how to recognise it at the most basic level would be good. How extreme of a swing can a player expect in a certain length of time or number of hands. These are things I used to wonder about alot.

If an experienced player drops 2 buy-ins in 100 hands he can blow it off because he knows that he might be up 3 buyins over the next 100. This has happened him loads of times before. A noob on the other hand hasen't got this reassurance and this could tilt him.