A document library provides a secure place to store files where you and your co-workers can find them easily, work on them together, and access them from any device at any time.   Additional resources are listed below on how to create and use a document library effectively: 

Creating a document library

  https://support.microsoft.com/en-us/office/create-a-document-library-in-sharepoint-306728fe-0325-4b28-b60d-f902e1d75939  

Uploading documents to SharePoint Online

Uploading documents to SharePoint Online (SPO) is easily accomplished using 1 of 2 methods: Drag and Drop, or using the ‘Upload’ tool.  Document libraries that require additional information (metadata) will be marked with a red question mark. 

Uploading documents: https://support.microsoft.com/en-us/office/upload-files-and-folders-to-a-library-da549fb1-1fcb-4167-87d0-4693e93cb7a0  

• Edit or Contribute Permission Required 

• All file types are accepted.  Some file types won’t be able to open or run without additional setup. 

• Internet Explorer does not support uploading folders. 

Permissions for sharing documents

Permissions are set either at the site level or through links. The link below is for the latter method.    

• Sharing documents: https://support.microsoft.com/en-us/office/share-sharepoint-files-or-folders-1fe37332-0f9a-4719-970e-d2578da4941c  

• See who a SharePoint file is shared with:

• Stop sharing SharePoint files or folders, or change permissions -

Custom views

Settings custom views will provide your end-user with a better experience.  SharePoint’s default views usually display a lot of additional information which may not be relevant to your users.  Learning to control what is displayed will reduce clutter, and save time. Please see the following:

• Understanding Views:  

• Creating a view:  

Syncing

The syncing feature allows you to access your SPO files through File Explorer even when you’re offline, providing more flexibility and reducing the time by not needing to open a browser. 
Note if you delete a file from File Explorer, it will be deleted from both locations.

• Syncing your document library: ,  

• To change the folders that sync for a site, or to stop syncing all files on a site:

• Content-Type:  

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