The tutorial is also hosted in GitHub.
Table of Contents Two site chain Three site chain Three site ring Large homoatomic ring A generic tight binding procedure Large chain Discrete chain Two sites per cell with $s$ orbitals Two sites per cell with $s$ and $p$ orbitals Two dimensional lattice Tight binding is a method that expands orbitals as a linear combination of atomic orbitals, like the method with the corresponding acronym, LCAO.