So, What Should I look for: Finding a group that fits you!
There are many kinds of grief groups and some of you will have preferences to one and maybe not another. Groups are usually open-ended or a "walk-in" group (they may meet once or twice a month) or they are closed-ended group, (time specific). As a facilitator and educator, I prefer close-ended groups. They provide a safe space for you to participate more fully in becoming a community and in your own grief process.
Walk in groups can be inconsistent and if you are a consistent member, you may feel like your group never gets past telling their stories to new people. Other people like the walk-in groups because if they are panicked, sorrowful, angry, or in a confused state, you probably won't want to hear that you have to wait weeks or months to get in to a new group.
Groups are facilitated in different ways as well. Some are facilitated by professionals, such as myself. What I offer my groups is my formal education in psychology, my training in grief counseling and death education, and my experience (both personal and professional) with loss. Some groups are facilitated by a kind-hearted person who has had a loss or who has time to do a group. The general wisdom that I share with people I work with is this; know your rights. It's your right to know whose hands and heart you are placing yourself as you are mourning.