ScrumEdge has a menu on the left with six options:

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Dashboard - view the project at a glance - Projects - add and edit projects, add to the sprint backlog and sprint log
- Stories - a backlog of work, written from the perspective of the end-user
- Sprints - track the 30 day focussed efforts towards getting work done
- Tasks - track action items
- Users - add team members and their roles

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Also included as a menu item along the top is a Setup Wizard. When you are starting out with this software, it may be beneficial to use this wizard to add the users, project, stories, and sprints that will take place (or, if you are just coming to the software mid-project, to add the items that are taking place.) Once you've added these items, you can add tasks.