Dropbox offers a free, basic version that provides up to 2 GB of online cloud storage. It is not necessary to upgrade to any of the paid versions - the free basic edition satisfies The Edge requirements.
There is no special configuration in the Dropbox desktop app, but you should verify you have an account linked. You will need to use this same account later when installing the smartphone app.
To do so:
- Locate the Dropbox icon in your Window's system tray (bottom right, by the clock).
- Left click on the Dropbox icon, then click on the Settings (gear icon) in the top right and select Preferences.
- Click on the Account tab and verify your account is linked. If it is not, link it now.
- After verifying, click OK to close.