You can move files into Dropbox on your laptop by simply dragging and dropping them inside the Dropbox file folder. Any new file or changes you make to older files inside Dropbox are instantly encrypted and uploaded to the Dropbox server and viewable on any device with a Dropbox app (assuming, of course, you have an Internet connection).

Tip: A blue icon appears next to the file during this process and turns into a green check mark once it's completed.

One of the great features of Dropbox is the ability to share folders with other Dropbox users. Right click a folder in Dropbox, go to Dropbox in the menu, and select Share This Folder. A Web page will open that lets you enter recipient email addresses, inviting people to have access to the folder. The folder will appear in their Dropboxes.

You can also share individual files with non-users. Right click the file in Dropbox, go to Dropbox in the menu, and select Copy Public Link. Then paste the link in an email and send to the recipient.