Data science is a broad area that necessitates a thorough understanding of mathematical statistics, probability theory, and linear algebra. You should also have strong analytical skills for data analysis, as well as strong communication abilities for presenting and interpreting the results. But for the beginning, just get strict command on your basics and make yourself strong enough to answer anything from basics. and, then going to the application level, implement all those basic things. Look at lots of data and run lots of programs. Study and get advice from forums like this and read everything you can find.
Also, there are Certification Courses provided by BI to help you learn about Data Science and its Fundamentals such as.,