We recommend that you join around 5 to 10 related Facebook Groups at a time. Not all of them are going to be winners. When you join each group be sure to read the rules and any guidelines.
A lot of marketers are impatient and will start making posts with links to their website straight away.
You do not want to do this. It can get you banned from a group very quickly. You need to add value to the group before you start trying to drive traffic to your site.
The easiest way to get started is to make a post about who you are and what you do. This is a “getting to know you” post which is perfectly acceptable. A number of group members will respond to your post and welcome you to the group.
You need to check the group rules to see if it is OK for you to provide links back to your website. Most groups will allow this but a small number may not. If you can’t add links back to your site then the group is a waste of time for you.