Getting around Tree Schema is largely done by the navigation side bar, each of the sections below has a link to the details for that page:
Leads to your organization’s dashboard, displaying high level statistics about your catalog as well as recent activity:
When selected the catalog tab expands to show the Data Stores, Data Schemas, Dictionary and Transformations:
When selected the Governance tab expands to show the Open Actions Report and the Recently Completed governance actions.
When selected the My Organization tab expands to show the My Teams and the Teammates selections.