Cloud Drive uses "libraries" to organize your files. A library works mostly like a top level folder. You can create a library for each project you work on, or each document type you want to save in Cloud Drive.
Each library keeps its own file modification history. There is no global file modification history across all libraries.
To create a library, click +New Library.
You can navigate into a library and manage your files and folders. You can upload, download, rename, move, copy and delete files.
Each library can be synced to desktop clients separately. You can choose which libraries to be synced. After syncing a library with desktop client, you can do any file operations inside the local library folder. The operations will be uploaded to the server.