Humble Bundle offers their Humble Book Bundle: Programming Cookbooks 2021 by O’Reilly (PC Digital Download) for the Price of Your Choice (name your own price).
Note, minimum price of $1 includes
- R Graphics Cookbook
- iOS Swift Development Cookbook
If you pay $10 or more, you also unlock
- bash Cookbook
- Docker Cookbook
- Regular Expressions Cookbook
- Concurrency in C# Cookbook
If you pay $18 or more, you also unlock
- Deep Learning Cookbook
- Unity Game Development Cookbook
- Machine Learning with Python Cookbook
- Python Cookbook
- SQL Cookbook
- Java Cookbook
- Kotlin Cookbook
- Raspberry Pi Cookbook
- R Cookbook