Have you ever emailed files to yourself or do you carry a memory stick with you that has files you think you will need today? No need to do that anymore because there's Dropbox. So what is this Dropbox, you ask? It is by far one of my favorite apps for iPad and iPhone.
Think of it as a folder that is located on every single computer, ipad, phone, etc you happen to own. And whatever you put into that folder is accessible with all of your computers, iPad and phones. I have a Dropbox folder on my computer and Dropbox app on my iPad. Whatever I put into my Dropbox folder on my computer can be accessed with my iPad. It is simple as that. Trust me, once you use it you won't look back.