For anyone interested in learning a little more about Esperanto, Duolingo just put their Esperanto course into public beta and there's a good amount of learning content already: https://www.duolingo.com/course/eo/en/Learn-Esperanto-Online.
There's also http://lernu.net, probably the most well-known source of Esperanto news, lessons and other stuff.
Amuziĝu!