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Jay, you will eventually get used to the Mac OS - There's always a learning curve and you have stacked up years of Windows habits to break. Once the Mac becomes natural to you, you won't look back.
If all else fails, check out the Apple Discussions forum - Lots of help there. Anything more serious, ask the techies on the AppleCare phone line.
https://discussions.apple.com/index.jspa < Registering does
NOT then get you swamped with marketing junk! It's the same as on here
Also there are lots of cool how-to vids on the Apple Support pages under the titles of 'Articles'. The Mac community is great
P.S. - I should have my 27" iMac too by this time next week