What is AON?
AON is an online roleplaying convention registration site. It allows people to have one AON membership and use those details to enter a number of roleplaying conventions, without having to go through the process of re-entering all their details again and again.
Creating a membership is easy - you need an email address, and to choose a username. When the membership is created, you can enter in all the usual details that a convention needs when you register. Then when you actually want to register for a particular convention, your registration will be pre-completed with your details.
For more information, check out the documentation section.
Alternatively, if you're ready to go, signup