'What is Dropbox?': How to use the cloud-based file-storage service for collaboration

· Dropbox is a cloud storage service that lets you save files online and sync them to your devices.
· You can use Dropbox links to share files and folders with other people without sending large attachments.  
· Dropbox offers a free plan that includes 2 GB of storage. You can pay to increase that to as much as 3 TB with a...