Data Representation Help
This link will help you with the data/graph section.
This link will also help you with the graph questions as well.
This link will also help you with the data representation passage.
This link will take you to a quick ACT video on how to read charts and graphs.
This link will help with some overview of the data representation and then walk you through a practice session.
This link is to Brightstorm's Data Representation hints.