10 topics I would focus on if I were to start my Machine Learning career again:
1. Python
2. Data Structures & Algorithms
3. Probabilities & Statistics
4. Learning Algebra
5. Calculus
6. ML algorithms
7. SQL
8.... See more
For all young folks who are interested in intelligence, I highly recommend to study five subjects and understand how they are related: compressive sensing (sparse coding), information theory, control theory, game theory, and optimization. The rest is mostly realization...