Version 10.6: "Snow Leopard"
Version 10.7: "Lion"
Version 10.8: "Mountain Lion"

My iMac

Processor 3.06 GHz Intel Core 2 Duo
Memory 4 GB 800 MHz DDR2 SDRAM
Running OS X 10.6.8 [ Snow Leopard ]

So as I recall, there are things to do before I upgrade to "Lion" and then "Mountain Lion"

I remember use guyz going thru that and the discussions. But I wonder if there is a place on the internet where I can get all the info, like, beginning with: checking my Mac for what stuff will not run under Lion? Then, what to back up. Then how to go about buying, downloading, and saving a copy of the Lion? And, all the other stuff.

Egads! Just the thought of all this is going to make me break out with the hives or something. I wish we had our old MacUser club here in McMinnville.