How to put password to documents

Although each individual currently have a computer, device or gadget staff, many decide to put password security to your documents, and that is if it is stolen documents with password can not be unlocked but the password is known.
Today here is what we'll explain how to do to put password to documents you have on your computer respectively.
tutorial:
1 - First you must choose the folder you want to add the password.
2 - Right click on properties
3 - Now you must click on Advanced
4 - Click on Encrypt contents to secure data
5 - You will need the system key to encrypt
6 - Click Encrypt contents to secure data
7 - Enter the password and ready, click OK to save the changes.