09 You'll have some "ah-ha" moments

From time to time you'll be pleasantly surprised because the Mac will do something that you completely didn't expect, because you're used to how Windows would do things. For instance, you put a picture into the Address Book, and it appears automatically in iChat and then on your phone.

10 Keyboard shortcuts will drive you nuts

I spent years honing the craft of keyboard shortcuts on Windows, to the point where it was mostly muscle memory pressing the keys for me. On the Mac, it seems like there are two or three different ways that the various shortcuts are implemented, and it drives me nuts to this day.

11 You'll regret the purchase, but you'll survive

You'll have a few moments where you really, really wish you had purchased that Dell laptop for $349, and you'll seriously consider taking the Mac back to the store, but eventually you'll get over it and wonder what the hell you were thinking.

12 You'll won’t be tweaking it all the time

I was a major tweaker in Windows - registry entries, options, toolbar buttons - and was taken aback at how few things there are to tweak on the Mac. At first it seemed to be restrictive, but I've realized it has actually freed me to do things other than tweaking, like work on this website.

13 You'll actually have to plan your reboots

You'll find that you leave dozens of things open all the time - browsers, documents, folders, stickypad notes - and that the need to reboot comes as a surprise. A software upgrade that requires a reboot will really tick you off.

As a matter of fact, the power button on my old PowerBook is broken. I would have to disassemble the keyboard and touch two points on the motherboard to turn it on if it crashed on me.  However, I just shut the display when done, and open it to start working again, and I’ve been working that way for over a year now.