I recently came across a very good blog entitled ‘storytelling with data’ “http://www.storytellingwithdata.com .
Kudos to you Cole Nussbaumer, it’s a splendid blog.

What I want to share with you is a great diagram published back in 2006 by Andrew Abela.
http://www.extremepresentation.com/uploads/images/choosing_a_good_chart.jpg .

Choosing a good chart

This is such an easy to follow approach to selecting the right chart for what you wish to portray using data, even if it does include pie charts.