Dropbox is a cloud storage service. There are other services out there, such as MobileMe, iDevice, SugarSync and Box.net (which is more geared toward enterprises). But I like Dropbox because of its simplicity. It's just a file folder in the cloud.

To get started, you'll need to download the Dropbox app and create an account at Dropbox.com. I suggest you do this on your Mac or PC first. There's a three-tiered pricing plan based on the amount of storage: 2GB (free), 50GB ($10 per month), and 100GB ($20 per month).

Next, you'll want to download the Dropbox app on all of your computers (laptop, iPad, iPhone, Android, BlackBerry) using the same Dropbox account name. The free apps simply allow you to access your file folder and view its contents, including streaming music and movies stored in Dropbox. You can also access your file folder by going to the Dropbox.com Web site and logging in.