What components for communication should I place on the site?
The main ways of communication, which can be placed on the site - are "E-mail", "Phone" and "Skype" (add screenshots and settings of these blocks). Thus, the user can always choose a convenient way, based on the preferences and capabilities. The more opportunities you provide, the merrier chances that the client will contact you. For the more complex situations, you can place an interactive form (for more information, follow the link)