Scroll down to the bottom of the listing. You'll see a green Send Inquiry button above the Listed By box. Tap on the button. You'll see a form for entering your contact information. If you've sent inquiries before, the form will be pre-populated with the information from your last inquiry. Check the information to make sure its still correct. Complete the form and tap on Send Inquiry at the bottom. You'll see a popup confirming that your inquiry has been sent. Dismiss the popup by clicking on the x. You'll see an Inquiry Sent page showing the contact person for the listing. You do not have to wait for this person to contact you. Feel free to call them immediately. If this is the first time you're sending an inquiry, you'll be required to verify your email address. You'll only need to do this once.