I am finding og and relationships very very confusing.

I add content to the group like events or pages, etc that reference the group. each piece of content has a og_ref field.

I want to use a view to show group information.

I can create a view and list title, etc.

How do I setup a view with contextual filters which will take the nid of the page, match it against og_ref and show the group info?

The nid can be a group itself, subgroups, or other content.

Signed,
og-confused.