This is kind of broad. Narrow it down a bit: 1. Are you interested in - analytics-type data science where you're focused more on product/business analytics, d

This is kind of broad. Narrow it down a bit: 1. Are you interested in - analytics-type data science where you're focused more on product/business analytics, decision making, A/B tests etc. or - applied machine learning kind of data science? 2. Have you taken undergraduate-level calculus (single and multivariable), linear algebra, probability theory or any statistics? 3. Are you already a software developer and if yes, what do you work on? 4. The books that you found challenging - which books and what was challenging about them?