Welcome to the party! And trust me, there's not too much different from Windows in terms of navigation....remember that Mac OS was the foundation for Gates' innovation that is Windows.
As for learning more about app installs and whatnot, see this link:
http://guides.macrumors.com/Installi...ns_in_Mac_OS_X
And there's nothing wrong to hold on to a PC. I have an iMac G5 and two other desktop PCs, along with a PC laptop from work. Of course, all of those PCs are running Linux as I've been free from the clutches of Microsoft for some time now (except, of course, at work...
).
As for the delete key, it's there on my keyboard (but then again I have a recent Apple keyboard that does have it). What Mac do you have? Some of the earlier Apple keyboards weren't full size since some of the keys that PCs use aren't used in the Mac OS, so why include them? Of course, now with virtualization solutions like Parallels, dual-booting through Boot Camp, and emulation through apps like Virtual PC a full keyboard is very necessary. Thankfully, with USB Macs you can also use any USB keyboard...of course, it you use a USB Windows keyboard with Mac OS X, be aware that the Alt key functions as the Apple/Command key and the Windows key functions as the Option/Alt key.
Now, if only we can find a solution for that "any" key.....
