Groups are a number of users, forum posts and get-togethers that all relate to a subject matter. For example, if you are into cooking, you may join the ‘Foodies’ group.
It’s important to join the groups that you have an interest in as some get-togethers are based on groups. If you do not belong to the group, you may miss out on the get-together.
You can get to groups by going to the 'Community' tab and then clicking the 'Groups' link.
On your computer screen: