I just purchased a macbood air, my first mac, I would like to know if I need to install an anti virus, what's the first thing I should do, and what programs I should install, I would appreciate any help you can offer. Thanks.
I know there are guides, but I always like to pass on my personal preferences.
Firstly, most stuff on OS X you install by downloading a .dmg file, or a disk image. This is like a virtual "disk" that appears on your desktop when you open it, like you plugged in a removable drive. From there you copy the application to your Applications folder on your Macintosh HD. Then you eject the disk that appeared (by dragging it to where the trash usually is in your Dock, it turns into an Eject symbol when you start dragging an ejectable volume) and can delete the disk image. Some applications have installers that you just double click, if they need to put files in locations other than your Applications folder to run. These will be packages, or there will be instructions in the disk image. A very few applications will just unzip directly in your Downloads folder, and you'll want to move these to the Applications folder. But it's pretty straightforward most of the time.
First things I'd install are some basic Internet utilities. For IM I use
Adium, it's a great multi-IM client (connects to AIM, MSN, Yahoo, Google Talk, and many more). If you go on IRC or use FTP servers, I'd recommend
Colloquy and
Transmit respectively (
Cyberduck is a decent free alternative, but I think Transmit is worth the money).
For local media playback I always recommend people get
Perian. It's a codec component for QuickTime that adds support for DivX/XviD videos, MKV files, Flash video, and a whole lot more. I also recommend
Flip4Mac which lets QuickTime play back Windows Media files.
What other sorts of utilities might you need? I'm sure there are recommendations out there.
It is better than nothing for weeding out Windows Viruses.
TEG
It's also not our responsibility to muck up our own machines trying to compensate for the weaknesses of the other platform.