1. Know - What is Data Science? The best definition I found for data science or data scientist is by Josh Wills, Director of Data Science at Cloudera: "Person who is better at statistics than any software engineer and better at software engineering than any statistician" You should view this presentation by Carlos Somohano founder of Data Science London to understand the big picture: Big Data [sorry] & Data Science: What Does a Data Scientist Do? from Data Science London 2. Learn - R (basics and beyond) If you did not ignore step#1 and absorbed the slides and links above then you probably know what R can do for you . The easiest way to learn R is to start programming with R. I recommend installing R studio on your laptop. This IDE comes with R help, console, workspace and editor all in one. Before you install R studio, install R first from this link . If you are organized person, you start with official R tutorial. If you are impatient and want to b...