Working through Reif’s problem sets is colloquially known as "The Reif Experience." It is frustrating, humbling, and ultimately transformative. By the end, the student can solve problems using the microcanonical ensemble in their sleep.
His book, Fundamentals of Statistical and Thermal Physics (often abbreviated simply as "Reif"), is not a casual beach read. First published in 1965, it remains the gold standard for bridging the gap between introductory thermodynamics and hardcore statistical mechanics. fundamentals of statistical and thermal physics by f. reif
Reif’s central masterpiece is his handling of the fundamental postulate: For an isolated system in equilibrium, all accessible microstates are equally probable. Working through Reif’s problem sets is colloquially known
Kittel takes a more modern approach using the "Gibbs factor" early on. While Kittel is more concise, many find Reif’s long-form explanations more helpful for building a "gut feeling" for the physics. First published in 1965, it remains the gold