A recommendation list of useful and/or impressed books. Some of them are very old, and only e-books are available.
IR/RS
Introduction to Information Retrieval
Information Retrieval: Implementing and Evaluating Search Engines
Personalized Machine Learning
Recommender Systems: An Introduction
Algorithms/CS Basics
Algorithms on Strings
Compact Data Structure
Algorithms in C
Introduction to the Theory of COMPUTATION
ML
Pattern Recognision and Machine Learning
Bayesian Nonparametrics
Computational Optimal Transport
Deep Learning
Language Learning
Practical English Usage