I'm not a developer, I only can deal with the control panel of the free website I made and don't know about coding. Is there's an easy way to tell me how to do that? 

Hi Tims,
Either you can use controllers or by using the groups attribute you can give the security for the website pages. For more information please follow this link

https://www.odoo.com/forum/help-1/question/website-page-permission-99616

Hope it helps