Yeah it means use a php form for visitors to contact you through. It is much safer and stops bots sending emails to you like thousands of times. Look around Google for a contact form tutorial there will be plenty!
A tutorial will tell you to use php and so when the user fills out a form it will be emailed to you with the details they filled out in the form. However most forms use like a "Captcha" entry and it stops the bots, almost like a "Are you Human?" test.
Hope this helps.