How to change the login password on your Mac

1. Click on the Apple icon in the upper left corner of the screen
2. Select System Preferences from the drop down menu
3. Click on Users & Groups
4. Click the Password tab
5. Click the lock in the bottom left corner of the Users & Groups window
6. Enter your current password
   Click Unlock
7. Click Change Password.
   Enter your current Mac login password.
8. Click Change Password.
   Click the lock to prevent further changes.
9. Your new password will automatically update. The next time you log out of your Mac, you will need to enter the new password

Simple!