You can create your own contact page as a general page, but Drupal also offers a module (built into "core") that makes it possible for visitors to use a form to request for contact.
To setup this contact form, take these somewhat different steps:
- Enable the Contact module (admin/build/modules)
- Go to the Contact Form (admin/build/contact)
- Add one category, call it something like "Contact".
- Go to the Settings of the Contact Form (admin/build/contact/settings)
- Enter more information, like you address and phone number at the Additional Information section.