In order to use FAT Event, you need to have WordPress installation ready. If you're not familiar in installing WordPress, there are several great online resources you can refer to:
It's highly encouraged for you to always have the latest version of WordPress installed, this will also keep your site being more secure.
To get yourself familiar with WordPress after installing, there is a great resource from wp.tutsplus.com teaching a lot of aspect in WordPress administration. Please check it out WP101 Basix Training.