https://www.humblebundle.com/books/math-for-programmers-manning-publications-books
The E-books from Manning in the $18 bundle are
Modern Fortran
Grokking Machine Learning (preliminary)
Quantum Computing in Action (preliminary)
Machine Learning in Action
Get Programming with Haskell
Practical Recommender Systems
Data Wrangling with JavaScript
Algorithms of the Intelligent Web
Math for Programmers
Grokking Algorithms
Algorithms and Data Structures in Action (preliminary)
Practical Data Science with R
Math and Architectures of Deep Learning (preliminary)
Data Science with Python and Dask