Do you use Dropbox? Do you understand exactly how it works? If you work at multiple sites, including your home office, you've likely been in the situation where you want to work on a project but forgot to save a critical file to a USB stick or email some information to yourself before you left the office. Dropbox can help prevent that situation, and many others.
This video from dottotech provides a simple, clear explanation of Dropbox, its benefits, and how you can get started. If you're not using any cloud storage services yet, take a look at this: