A great book to help you create better charts/graphs. (Note: I call them charts because I use Excel – graphs may be the correct term.)
The book explains many visualisation concepts and backs it up with step by step examples of improving charts.
The before and after charts speak for themselves.
The book also places emphasis on identifying the message you are seeking to convey to the reader of your chart and making sure you are using the best chart to get that message across.
With dashboards being the buzz at the moment learning how to best display your information is a good skill to have.
This quote was used in the book and encapsulates many of the recommendations. Highly recommend this book.