If you are interested in joining a group (or checking one out causally) get in touch with the group directly — using the contact info at the bottom of each listing.
If the group has space, you will be invited to attend a meeting to check it out. The group will welcome you, and will explain and demonstrate how things work.
If more than one group exists in your area, feel free to try two or more to find the best long-term fit for you.
