Information about your Groups — those you've created and those you've been invited to — can be found on the right hand side of your My Library page.
Groups work like email distribution lists, helping you efficiently share documents with students, colleagues, friends, family members, … anyone.
To create a Group, click on the "Create Group" button under the My Groups header:
Clicking on a group name takes you to a Group page:
where you can see its members, pending members (people invited who have't activated their account yet), and documents. You can have as many Groups as you like.
Using Groups lets you:
A Group's administrator invites people to the Group by clicking the green “invite” icon near the top left of the Group page. The administrator can also: