The Documents folder is a convenient location to store documents, spreadsheets, presentations, databases, and other commonly used files. Many programs use this location by default to open and save files. If you are looking for pictures or music, however, those files are stored in their own folders.
Here are help topics that provide additional information about using the Documents folder:
What happened to My Documents?
Folders: frequently asked questions
Find a file or folder
Add tags or other properties to files
Change thumbnail size and file details
For more information about using files and folders in Windows, search for "files and folders" in Help and Support.