Resources for learning how to use a Mac? I'm not really sure exactly what you mean by that. About two years ago, I bought an iMac (I had never used OS X before then). I just played around with it until I got the hang of the interface and everything. The single most helpful resource I can point you to (and one that I've used countless times when trying to get something done on my Mac) is Google. Beyond that, try visiting something like macworld.com. They review Mac software and accessories, as well as providing a steady supply of how-tos and other stuff for Mac users.
You want some pros and cons. Well, some things I can think of off the top of my head include very good stability, ease of use, and a pretty interface. :-) The software integrates very nicely into the hardware, so the only need for installing drivers is external stuff (and Macs usually handle that pretty well, too).
Bad things? Well, a strange phenomena I have observed on my Macs (both Intel and PowerPC) is a slowdown as I use more and more applications. Before you start laughing at me, let me point out that I only have one or two applications open at one time. So by the end, I've still only got a handful of applications open, yet my Mac is often so slow I can barely use it. A simple reboot does the trick. But actually, I haven't had too many things things that bug me on my Mac (except for a bunch of partition table issues, but that's because I'm a geek).
