Probability theory is essential for statistics, machine learning, finance, and physics. These books cover everything from combinatorial probability through measure theory and stochastic processes.

Introductory Probability

Standard introductory probability textbooks.

BookAuthorYearLevelDescription
Introduction to Probability
2nd Edition, CRC Press
Joseph K. Blitzstein, Jessica Hwang2019IntermediateHarvard's Stat 110 textbook, the best modern introduction to probability. Free lectures on YouTube.
A First Course in Probability
10th Edition, Pearson
Sheldon M. Ross2018Beginner-IntermediateThe most widely used introductory probability textbook.
Introduction to Probability
2nd Edition, Athena Scientific
Dimitri P. Bertsekas, John N. Tsitsiklis2008IntermediateMIT-based textbook with strong emphasis on conditioning and intuition.

Measure-Theoretic Probability

Rigorous graduate-level probability based on measure theory.

BookAuthorYearLevelDescription
Probability: Theory and Examples
5th Edition, Cambridge
Rick Durrett2019AdvancedThe standard graduate probability textbook, freely available. Rigorous measure-theoretic treatment with many examples.
Probability and Measure
Anniversary Edition, Wiley
Patrick Billingsley2012AdvancedClassic rigorous probability textbook.
Foundations of Modern Probability
2nd Edition, Springer
Olav Kallenberg2002AdvancedComprehensive advanced probability reference.

Stochastic Processes

Markov chains, martingales, and Brownian motion.

BookAuthorYearLevelDescription
Introduction to Stochastic Processes
2nd Edition, Chapman & Hall
Gregory F. Lawler2006AdvancedClear introduction to major stochastic processes.
Markov Chains and Mixing Times
2nd Edition, AMS
David A. Levin, Yuval Peres2017AdvancedModern treatment of Markov chains with mixing time focus. Free online.
Brownian Motion and Stochastic Calculus
2nd Edition, Springer
Ioannis Karatzas, Steven E. Shreve1998AdvancedStandard reference on Brownian motion and stochastic integration.

Applied Probability

Probability with applications to specific domains.

BookAuthorYearLevelDescription
Probability and Random Processes
3rd Edition, Oxford
Geoffrey Grimmett, David Stirzaker2001Intermediate-AdvancedBroad coverage of probability and stochastic processes.
Introduction to Probability Models
12th Edition, Academic Press
Sheldon M. Ross2019IntermediateApplied probability emphasizing stochastic models.
Stochastic Processes
3rd Edition, Wiley
Sheldon M. Ross1995Intermediate-AdvancedClassic applied stochastic processes textbook.

Probability for ML and Physics

Probability with specific applications to machine learning and physics.

BookAuthorYearLevelDescription
Information Theory, Inference, and Learning Algorithms
Cambridge
David J.C. MacKay2003AdvancedUnique integrated treatment of information theory and ML. Free PDF.
Probabilistic Graphical Models
MIT Press
Daphne Koller, Nir Friedman2009AdvancedDefinitive treatment of probabilistic graphical models.
High-Dimensional Probability
Cambridge
Roman Vershynin2018AdvancedModern probability for data science and ML applications.