Q&A for How to Join Groups on Facebook

You will usually only receive notifications if you have friends who are posting in the group. That said, you can turn off the notifications if they bother you in the settings of Facebook.

Yes, you need a Facebook account to join a group or do pretty much anything on Facebook besides just browsing.

Yes, if it's a public group, that shouldn't be a problem.

Type the name of a group or keywords into the search bar and select that you only want to see groups. Scroll through until you find the one you want.

Facebook does this thing called suggested groups, which lists groups (either from clicking on the groups tab or from the side where the adverts tend to be) that you might find interesting. You might be seeing one of those groups.

The group can only see posts that have been made in the group. If you share a post that someone on your friend's list has made, then they can see that you have shared it, but the group may not be able to see it. It depends on the person's privacy settings.