It’s true that you don’t miss things until they’re gone. Take alt-tab, the standard window switching mechanism, for example.
Apple-tab is the OS X equivalent. This is fair enough since the apple key is in the same position as ctrl is on non-Mac keyboards. It’s the same idea – and, in fact, placement – as the old Amiga key. On a side note, perhaps in future we could all adopt an “OS key” for operating system-specific operations.
Anyway, apple-tab is no alt-tab. It switches between a seemingly random mix of open, closed and what-I-thought-I-closed-two-days-ago applications. Right now, for instance, apple-tab lets me switch between Quicktime, Finder, Preview and iTerm. Except that, when I select any of the first three, no window actually appears. Only iTerm jumps to the front. The others’ menu is activated but no other visible sign.
Is it because I’m using Virtual Desktops? Are the other applications “hidden”? I’ve no idea. OS X has no concept of virtual desktops so it’s a reasonable theory. If so, it’s still pretty unforgiveable to lack virtual desktops.
Also, note that apple-tab is an application switcher. If you spend your day in web applications (i.e. 50 Firefox windows) then you’re going to need to practise your mouse skills to switch windows.
The taskbar thing at the bottom of the desktop is no help, either – a big long list of applications with a little overlaid arrow signifying that the application is currently running. Same story when I click on the icon, however.
(I’m writing this from the perspective of someone who’s been using OS X for about a month and hasn’t read any documentation on OS X and, to be perfectly honest, isn’t planning to and honestly thinks that needing a manual for something as basic as window-switching is a bad sign.)