The goal of this project is to write an introductory book on statistical mechanics. As there are already many such books, both for physicists and
mathematicians, we believe it is important to describe what we aim to achieve.
We decided to write a book that is

Note [May 11, 2015]: Claudio Landim (IMPA) has recently given a course based on Chapter 3 (The Ising model). Videos of the lectures can be found here (see lectures 1 to 9); the lectures are in Portuguese.
Note [January 19, 2016]: One of us (Y.V.) has recently given a onesemester course, entitled Introduction to Statistical Mechanics, based on Chapters 3, 7, 8 and 10. Videos of the lectures (as well as other lectures in the same program) have been uploaded here.
Note [March 22, 2016]: As you may have noted, the title of the book has been shortened, after discussion with the book's future publisher. This is the final title.
Files
Complete book (version: October 25 2016) [ERRATA]
Title and table of contents (version: August 25 2016)
 Foreword (to be written)
 Chapter 1. Introduction (version: October 13 2016)
 Chapter 2. The CurieWeiss Model (version: September 2 2016)
 Chapter 3. The Ising Model (version: October 13 2016)
 Chapter 4. LiquidVapor Equilibrium (version: August 25 2016)
 Chapter 5. Cluster Expansion (version: October 13 2016)
 Chapter 6. Infinite Volume Gibbs Measures (version: October 13 2016)
 Chapter 7. PirogovSinai Theory (version: August 25 2016)
 Chapter 8. The Gaussian Free Field on Z^d (version: August 25 2016)
 Chapter 9. Models With Continuous Symmetry (version: August 25 2016)
 Chapter 10. Reflection Positivity (version: August 25 2016)
 Appendix A. Notes (version: August 25 2016)
 Appendix B. Mathematical Appendices (version: October 25 2016)
 Appendix C. Solutions To The Exercises (version: August 25 2016)
 Bibliography (version: August 25 2016)
 Index (version: October 13 2016)