Data Science is more art than science. Best way to learn Data Science is by doing it. There are lots of platform which host data science competitions to build a better world, bringing cutting-edge predictive models to organizations tackling the world’s toughest problems. Lot of companies internally conduct such competitions to bring competitive and learning culture. I literally ask my students to participate in the competitions in the class and submit the solution to give them motivation. It also helps them develop business acumen, and improve their technical skills at the same time. Here I have listed few of them: • Kaggle https://www.kaggle.com/ • Analytics Vidhya https://datahack.analyticsvidhya.com/contest/all/ • Data Driven https://www.drivendata.org/ • Crowd AI https://www.crowdai.org/ • Coda Lab https://competitions.codalab.org/