Shortly after payment, we will send you an email confirming the booking.
OUIGO will send you a separate email with the actual tickets as PDF attachments, but they will only do this 4 days before your travel date, so please look out for the email.  
If you are travelling within 4 days of making a booking then you will receive the email with tickets immediately.    
Please don't forget to print the tickets out on A4 paper. There are no printing facilities at the station, and OUIGO will charge you 5€ if you arrive without your ticket