The middle tab of the Dropbox web interface is the Events tab. This shows you all of the recent activity that has taken place on your account. This includes a wide variety of data such as the addition and deletion of files, moving files, adding and removing folders, sharing files and folders, linking computers to your account and more.

You may never need to use the Events tab, but it comes in handy if you want to take a look at your recent activity in order to remember a change that you made or find a file that you've misplaced. The Events page can show up to 50 events at a time, and you can also sort events by date.

The fourth tab from the left is Sharing. This is where you'll find all of the options related to sharing files with Dropbox.

Last, but not least, is the help tab. This is where you'll find all of the information that Dropbox has provided for you about the service, as well as links to the Dropbox wiki and forums. This guide is designed to acquaint you with the Dropbox service, but the forums are a great place to check out if you have continuing questions or technical difficulties that you're unable to resolve.