I found this guy who makes infographics for a lot of companies and I thought this was helpful because he has some youtube tutorials to show how he does things.
Mike Wirth . (2012). Infographic Design 101: Intro to the graph tool in Adobe Illustrator. [Online Video]. 19th April 2012. Available from: https://www.youtube.com/watch?v=p8n1Omxxt8E. [Accessed: February 2015].