Simply search through the listings to find the Psychic and Reading you're interested in. (You can also send the Psychic a message to gather more information before you purchase the reading)
You then simply click on 'Buy' to purchase the reading. You can also leave questions and more details about your issue in the notes. Payment is made through PayPal though you can also use a credit or debit card in conjunction with PayPal.
Most Psychics send your reading within 24 hours though in some cases they will be sent within just a few hours. (this is usually made clear on the listing) You can also leave feedback for the psychic after you've received the reading.
You can also have an Instant Chat with a Psychic using eMystics Interactive Chat System. You pay for a block of minutes in advance using a credit of debit card.