There is an official fan club, which you can find here. It's free to join and you can meet other members through the forum. There is a lot on this site, so you should really explore it, For example, there is also an official Star Wars website at the same address, where you can keep up to date with events, merchandise etc. In fact if you put 'star wars club' in a search engine you will find a number of links, including the Star Wars Roleplaying Club which is connected to the main fan club.
However, most clubs to do with Star Wars are regional, because a lot of fans like to meet up in person. If you put the name of your nearest large town in a search engine along with 'star wars club' you will see any local clubs (there is one in Norwich, for example) or any events, conventions etc that are being held.