This full-day tutorial shows you how to do Bayesian data analysis, hands on. The software is free. The intended audience is graduate students and other researchers who want a ground-floor introduction to Bayesian data analysis. No mathematical expertise is presumed. If you can handle a few minutes of summation notation like ∑i xi and integral notation like ∫ xdx, you’re good to go. Complete computer programs will be worked through, step by step.