APPS GALORE
When you went into the Apps section to add the documents app, you may have noticed a lot of other apps. Most of the apps are installed but not enabled. You can either browse the categories, or use the search option to find interesting apps, then you just need to hit each app’s “Enable” button to make it available.
The Productivity section includes the usual calendar, contacts, bookmarks, notes, and to-do list type apps, but there are more available, including an email client, so OwnCloud can double as your webmail, too. There is already a photo gallery app in the default OwnCloud setup, but the Multimedia section includes an enhanced option, as well as a music player. All of this can be shared with other users as you desire.