The folders tab can be accessed from the dashboard. It is on the left side menu and clicking it will take you to a view where you can see all of your folders. You can also see how many documents belong in each folder. If you want to open up a specific folder to see just those documents, you do this by clicking on the folder you want to open.
There are no limits on folders in Content Villain so please make use of them for all of your projects. If you need to add a new folder, you can do so by clicking the red button in the top right. Give the folder a name and hit create and it will now appear in this list. Super simple.
To delete a folder, simply click the icon in the top right which looks like a trash can. You will be shown a pop up to confirm the deletion and on confirmation the folder will be deleted. Any documents which were in that folder, will be pushed to a folder called Uncategorized. If you want to organize these documents further, you can do so from the document view and change the document's folder.