How to implement Metadata navigation in SharePoint 2010
Plan the Navigational Hierarchies and Key FiltersPart of the implementation of metadata navigation is planning the fields to use for hierarchies and filters, which requires an understanding of the user's requirements and the content.
These six Key Filters enable us to narrow our results down to an acceptable size for our queries.Configure Metadata Navigation
Configure Metadata NavigationYou have just configured metadata navigation in the document library. You can now use metadata navigation to locate content in the document library.