Custom Webform

I am new in drupal and I still have to learn a lot about how to do modules and etc. I need a help on creating a couple of custom modules or functionalities on my site that was done in drupal. I need a module similar to the one: [login to view URL] Need a webform on each product page Content types “Anuncio Cavalos” and “Central de Anúncios”. Each product has a reference node to a owner content type where contains the email address field. The form would need to retrieve the email address from the email field from the owner content type according to the product displaying connected by reference node field.