If you’re happy with your Mac, chances are good that you have an iPhone or iPad as well. Since many of the programs on the Mac have equivalent apps on the iPhone and iPad, you can store data on one device and transfer it to another.
For example, you might enter an appointment in your Calendar app on the iPhone, and then transfer it to your Mac so that you see the same appointment on all of your calendars.
You might also have music or an e-book that you put on your Mac but you want to read on your iPad. Whenever you put data on one device, you can seamlessly transfer it to ...