We can also use the sharing functionality to share documents with the collaborators (15 GB of space for that). In the main Google Drive page, we can create a folder by navigating to Create | Folder. We are then required to give it a name:

The folder will be shown in the files and folder explorer in Google Drive:

To share it with someone, we need to right-click the folder and choose the Share... option. Then, just like the process of sharing a spreadsheet we saw previously, we just need to add our collaborators' contacts (for example, e-mail) in the Invite people: field, then click on Share & save, and hit Done. The invited people will receive an e-mail to add the shared folder to their Google Drive (they need a Google account for this) and it is done. Everything we add to this folder is automatically synced with everyone. This includes all the Google Drive documents, PDFs, and all the files uploaded to this folder. And it's an easy way to share multimedia projects between a group of people working on the same project.