If you are starting with any technology then you must have some basic knowledge of the fields related to it. So, if you want to learn Data Science below are the following key areas where you must be an adept:
Mathematics ( especially in Calculus, Statistics, and Probability)
Analytical Skills
Programming Skills
Problem Solving Skills
Good Visualization Skills
But, if you are not too good at all of these then no worry! You can learn and practice it.
So, you must start learning with this enlightening Data Science Tutorial that will give you a head start for your bright Data Science career:
Also, you can take Data Science courses which are extensively designed by project managers from top MNC’s.