What is Esperanto:
Esperanto Association of Britain (EAB):
This website is produced by UEA (World Esperanto Association) and has news and information about the international Esperanto movement in easy Esperanto, as well as more general articles.
Amikumu to find esperantists locally:
Ekparolu to speak with an experienced esperantist through Skype:
Note that the site is in Esperanto as they expect people to know the basics. The skype session (30mn long) is not a lesson but a chat with an esperantist.
Facebook. There are many groups (click on ‘Join’ to, well, join them):