I bought a mac recently too. First thing I did was buy and install Lion (the new os). It's only 30 dollars and worth it. The swipes make life + using it so much easier and faster

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The best thing is now I use chrome with three windows in full screen and use the swipes to switch windows. So much faster than clicking tabs with the mouse.
- Three fingers sideways to switch programs/applications/windows
- Two fingers sideways to go back for forwards in browsers/finder windows/etc
- Three fingers up to show all programs (if you get lost and are trying to find an open application with the just normal three sideways)
- Four fingers pinched brings up a screen filled with application logos and names like on the ipad. Use two fingers to move between screens
(Each screen looks like it holds 40 logos. This might be able to be changed in settings if you want more per page. But I don't want that)
and you can start up a new application from anywhere if you want to do something. No need to go back to finder and open the applications folder.

- A bunch of other cool swipes that I haven't bothered to use. There's something for zooming in on any content, I don't remember it since I never use it.
Then I installed chrome and rearranged my appbar.
Next installed, xCode, Adium (all-in-one im client), Colloquy (irc).
Then I opened chrome and imported my bookmarks + settings.
Then I opened bootcamp, and set up windows with 180gb of space.
Did my usual stuff for windows (I used ninite to install most of my programs, and then downloaded a few that wern't on the installer).
Went back to osx, and installed microsoft office, eclipse, handbrake (file converter), skype, silverlight (for netflix).
Then I went to wallbase.cc and downloaded ~50 wallpapers and set osx to switch backgrounds every 30 minutes.
Oh, I changed the default language to japanese, I think you probably wont want to do that.

Then I connected my mac and windows through ethernet and transferred over my itunes library and a few other important documents and set up/organized those in finder.
I think I did a few other things as well. And some of those are completely out of order, but.. it's a good enough idea.
To install a file, download the dmg and then open it and the os will "mount" it. You'll see a drive icon appear on your desktop, open that drive and drag the application to what ever folder you want to install it in. (I always use applications folder).
Now I have my mac and windows set up to replace my old computer.

. I think this was what you were looking for. If it's not ask where I messed up at.

. Or if you are confused at anything I said, ask that too.

Err edit, just realized that the first thing I did was set up the network so that it could connect to the internet.. but that doesn't count, right?
