"I was using Mavericks and suddenly a dialog box popped up and asked if I'd like to take a tour of the new features. I clicked sure, and off we went. It highlighted and explained the more significant features and improvements of 10.9.

"I thought this was a nice idea and a nice touch by Apple. BTW, if you should use the Avast AV program on your Mac, it is compatible with 10.9," and so Jim Hamm continues with his introduction to the newest and greatest.

Anyone else taken the plunge? Let's hear from you, too.