The document explains three methods to encrypt files and folders in Windows 10: using the built-in folder encryption for Windows 10 Pro, password protecting with 7-Zip, and using a batch file for locking. It provides detailed steps for each method, including how to create a password protected zip file with 7-Zip and a custom batch file for locking folders. Overall, the document serves as a guide for users wanting to secure their data on Windows 10.