I found Designing with Data (http://www.designingwithdata.com/ http://www.designingwithdata.com/) to be a simple and practical introduction to data visualizati

I found Designing with Data (http://www.designingwithdata.com/ http://www.designingwithdata.com/) to be a simple and practical introduction to data visualization. I attended Tufte's seminar years ago, and found it entertaining, but that's about it.