Statistical Mechanics is notorious for heavy mathematics (Stirling’s approximation, Lagrange multipliers, Beta-Gamma functions). Gupta and Kumar do not skip steps. For a student struggling with the transition from macroscopic thermodynamics to microscopic states, this book acts as a patient tutor.
Buy a used physical copy for ₹100 (~$1.20) from a local book market and scan only the chapters you need for personal backup. This is ethically ambiguous but generally accepted under "Fair Use" for personal study.
Blocked Drains Reading