Your inbox page is where you capture new items and sort them when you have time over. It's divided into four parts: Tasks, Projects, Notes, and Resources.
Tasks - Add a Relation. A relation to a Task can be Account, Area, Project, Notes, or Resource. Projects - Add Area, Status, Goal, Priority, and Deadline to sort. Notes - Add a Relation to sort. A relation to a Note can be Account, Area, Project, or Resource. Resources - If you want to keep the resource, change the status to “Reviewed”. If not, delete it.