First and foremost, you need Neo4j. The community edition is free and open source. It can be downloaded from http://www.neo4j.org/download.

In the initial chapters, the examples are created using embedded Neo4j. To run the Java code, you need any Java IDE and Maven.

If you read this book on a tablet with an Internet connection, another way to run the Cypher code is using the Neo4j Console (http://console.neo4j.org/); it allows you to run Cypher queries directly in your browser and lets you to see the results immediately.