I first found out there was a club in my city through a JEF, young European federalists event, but it took quite some time - and the help of a friend - until I went there the first time.
How do I find out if there is an Esperanto club in my city?
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There are a couple of possibilities:
I would like to second what Aviadisto said, especially the google search. Esperanto in my own city is very easy to find and comes right up in a google search. I've said before that if people can't find us, they're not really looking.
There isn't really one good way to look -- or even five good ways to look - so look every possible. Picking up where Aviadisto left off: