Groups are where you'll spend most of your time on My Family Spaces. They're private areas where you can blog about what's going on with your life, and can comment on other people's blog posts or upload photos.

To create a group, click the "create content" menu on the left sidebar:

Next, click "group" to create a new group.

Once your group has been created, you can invite others to join using the "invite others to join" menu on the right sidebar.