Neo4j Browser comes with two built-in examples, which you can create and explore using interactive slideshows.
The "Movies" example, is launched via the :play movie-graph command and contains a small graph of movies and people related to those movies as actors, directors, producers etc.
The "Northwind" example, is run via :play northwind-graph and contains an traditional retail-system with products, orders, customers, suppliers and employees.
It walks you through the import of the data and incrementally complex queries using the available data.
This is a companion discussion topic for the original entry at https://neo4j.com/developer/example-data/
