Printing paperwork is optional.
We suggest keeping all your travel information, such as flights, hotels, and transfers, on your phone for convenience. You can find this by logging into "My Bookings".
When you go to 'View and Manage Booking' on your app/online account you get the option under 'Booking information' to view or resend your paperwork to your email. By emailing it to yourself you will have easy access to it on your phone or can easily print it.
You can find boarding pass information here: How do I get my boarding passes/tickets?
Most airlines accept a digital boarding pass, however if you like to have a paper copy you can print it off once check in has been completed. If checking in at the airport your boarding passes will be provided at the airport.