Linear Scaling Electronic Structure Methods - Lecture notes from a 2002 conference sponsored by the Institute for Pure and Applied Mathematics at the University of California, Los Angeles.
NWChem - Software for electronic structure calculation and molecular dynamics simulations. Includes documentation, information on how to obtain the software, and tutorials.
Semiempirical Methods - An overview of the theory, equations, and performance of the methods based on neglect of differential overlap, with emphasis on AM1, MNDO, and PM3.