These are books that I purchased and have enjoyed very much. If they are here then I learned a great deal for them, and feel they are not only worthy of a purchase, but that they are best in class. Each subsection is listed in order of my favorite to least favorite when compared to each other.
python
beginner
intermediate
- Effective Python: 59 Specific Ways to Write Better Python
- Data Science from Scratch
Advanced
SQL
C#
data science
beginner
intermediate/advanced
algorithms
mathematics
calculus
precalculus
differential equations
- Ordinary Differential Equations
- Differential Equations
- Solution Techniques for Elementary Partial Differential Equations
- Differential Equations, Dynamical Systems, and an Introduction to Chaos