Windows and Mac OS X aren't vastly different operating systems, but moving from one to another is definitely capable of taking a person out of their comfort zone. If you're new to Mac, or know someone who is, and need a helping hand, Switch to Mac is a helpful app you can grab for $1.19 that'll demystify the process.
Switch to Mac isn't much more than a guided set of video tutorials, but it's hard to argue a comprehensive education isn't worth $1.19 when it's something you need to learn. The $1.19 price is currently a launch special, and the app is available exclusively in the Mac App Store. While you're at it, be sure to check out our guide on switching to Mac as well — it's free!