Some Things to Consider:
Therapy or Support Groups: A therapy group is run by a professional therapist. You will be charged a fee and there are attendance requirements. A support group is usually led by a community volunteer or church leader, or it may be facilitated by a professional. Many of these support groups are free and have an open attendance policy.
Size: some groups are so large they may feel intimidating and you may not get the attention you need. On the other hand, you may like the anonymity of being part of a crowd.
Men only, women only, or mixed: A coed group can be an opportunity to work on male/female relationships in a safe, controlled environment. A group consisting of women only will help women develop supportive female relationships; and a group of all men will help men safely express their feelings without too much embarrassment.
Location: In the hectic balancing act of jobs and children, during and after divorce, it can be helpful to attend a group relatively close to home.
Frequency: Some groups meet once a week, others once a month. Choose one that will meet your needs (if you're in the early stages or a difficult patch, you may want to attend a group that meets more often than once a month).
Philosophy: Is there a religious orientation? Twelve-step approach? Is it open to the public?
Commitment: Some groups require a commitment of 10 weeks, or three months, or some other time period. Others are open-ended, meaning you can attend every week for years, only requiring a two-week notice to the group before you quit.