You can create a user account for guests, people who will only use the computer on a brief, temporary basis. The guest user will be able to use the programs on your computer, but they won't be able to access your files, mess with your settings or install apps.
To create a guest user account:
When in the
Click on
In the
When the
You will be returned to the Users Settings window. Make sure that
If it isn't, click the
You can change what the guest user is allowed access to on the computer. Click
When you've finished, close the Users Settings and try logging in to the guest user account.