My wife and I were out snowshoeing today and we ran into a few cross country skiers. It looked like a lot of fun and we really want to get into it.

We want to get some cheap (i mean CHEAP), used skiis from somewhere like a garage sale, Goodwill, Craig's List or the like but I confess, I know literally nothing about skiing gear.

Is there anything in particular I should pay attention to when checking out used skis? Any deal breakers in the bindings, the edge, the scales on the bottom? Any advice would be much appreciated.
Gear Talk There's no such thing as having too many sporks!

Backpack Flyfishing Tight lines,light packs