Using problems and examples from Texas Holdem, rather than the standard balls and urns, this is a fun and engaging textbook for an introductory course in probability. The book covers all of the fundamentals, including the axioms of probability, permutations and combinations, conditional probability, independence, Bayes’ rule, discrete and continuous random variables, simulation, expected value, correlation, conditional expectation, laws of large numbers, the central limit theorem, Brownian motion, and Markov chains. Supplementary R code is available for implementing topics in computational probability relating to Texas Holdem.