Ritual and joining an established group

Yesterday I was at a family funeral. The rite was one I'm only a little familiar with: enough to follow, but not enough to know what was coming next. It's made me reflect on the rituals - acknowledged and unnoticed - that we perpetuate in groups and professions. So comforting and affirming for those in the know. Provoking anxiety, confusion or ridicule in the newcomer.

There was a written 'order of service', which included the information that no doubt seemed useful to those who wrote it - the things that would be different, or special, about the event. The things that would be the same as they always are, were not included. Which makes sense if you are already part of the group and you know what those things are, and means you are very lost if you are there for the first time.

What do we take the time to explain to people who are new to our way of working? What do we consider so self-evident that we don't think explanation is needed? How do we respond when someone asks or seems lost?

What do we open our minds to when we first join a group? What do we do to show we are interested and curious, yet a bit lost? What do we attack, without having the patience to observe and attempt to understand?