What all you need to become a data scientist?

There is no single starting point or path you can follow to become a data scientist. You can start from anywhere -- from a science, engineering, commerce graduate, Ph. D degree and continue your journey with coding any kind of problem you see around, to attending online courses, participating in a Kaggle competition or doing a data science project under a mentor. Even there is no single starting point or path still there is set of common skills and passions that you must possess. Mathematics & reasoning comes first and along that you should have a passion for coding/programming and problem solving.