Notes on Mathematics, Computer Science, Physics & Chemistry
Calculus, linear algebra, engineering math, probability, statistics, discrete math, numerical analysis, graph theory.
Algorithms, data structures, programming languages, OS, databases, computer architecture, NLP, cryptography, software engineering.
General physics, mechanics, signals & systems, quantum mechanics, quantum field theory, simulation of dynamical systems.
General chemistry — atoms, bonds, reactions, thermodynamics, kinetics, and basic organic chemistry.