Donnie & Jane, depending on how many meetings there are and how large a town you live in you may find totally different people in every single meeting.
When I first got out of detox I grabbed a meeting list and if I liked a certain meeting I would circle it and go back to it, if I did not like a certain meeting I would stratch through it and the following week go to a different meeting that night. In 3 weeks I had a regualr set of meetings that I went to for many many months.
Since finishing the steps and now having sponsees I work with I go to 3 meetings a week with out fail, my home group if at all possible I never miss.
Every group is made up of members of that (Home group) group plus any one else in the fellowship that shows up. Even though I have a home group if some one is looking for me they know what other meetings I go to on a regular basis.
Just keep going, I can assure you that you will find meetings you do not like... not to worry, just go to another meeting on that night the following week.
Funny thing, but meetings over time are pretty fluid, you will find a core group that have been going to a certain meeting for YEARS, but over the course of time people just change meetings to mix thing up.