An introduction guide to AB Testing for growth hackers. Starts with why we test, how we prove a winner and ultimately how to make more money with better converting sites and applications. It includes rules to live by when AB Testing and as well as examples from sites like http://raygun.io and 37 Signals. This presentation was for the Wellington Growth Hackers group in New Zealand but is applicable to both technical and non-technical users. Presentation was for about 30 minutes and presented by John-Daniel Trask.