As per Mother Courage’s request, I’m going to mention very briefly what Apple computers are like. If you’re already familiar with Macs then you may choose to skip reading this post. I’m going to refrain from being technical but if you’re interested in the details I recommend visiting X Vs XP.
The most popular operating system for PCs is Microsoft Windows, while Apple Computers exclusively use Mac OS X. Even though your choice of OS depends entirely on personal preference, most tech enthusiasts would agree that Macs have better stability and are less obstructive.
In general, any software must be created specifically to run on a particular operating system or architecture. That is, you can’t install Windows applications on Apple or vise versa unless another platform version was made available. Many of the industry-leading software packages such as Adobe’s Creative Suit are readily available for Mac.
There are some exceptions to the points I have just made but I’m not going to go through them for the sake of simplicity. If you have any questions, please feel free to comment and I will be more than happy to answer them.