Use the following steps to create a document library in SharePoint. Create a document library in SharePoint to securely 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. SharePoint team sites include a document library by default, however, you can add additional document and other libraries to a site as needed.
Step-by-step guide
Select Settings, and then select Site contents.
Select add an app.
Select the library type you want (document, form, picture, and so on).
If you don't see the one you want, in the search box, enter a keyword, and select search.
4. In the Namefield, enter a title.
You can also select Advanced Optionsand enter aDescription. Depending on the type of library, you can add versioning and other features.