If you want to interact and impart various things with users whom you share common interest with, you can create or join a Facebook group. Through this feature, you can upload contents, participate in chats with other members, create group events, and work on group documents.
To view the list of your groups on Facebook, go to your homepage. On the left panel, find Groups, below Favorites. You can expand your group list by clicking More. In addition, you can create or leave a group, edit settings and manage group bookmarks through this list.