On the following website you find a good set of notes on configuration interaction. I have copied the outline below.

http://vergil.chemistry.gatech.edu/notes/ci/node1.html * Contents

* Introduction and Notation

* Fundamental Concepts

o Scope of the Method

o Why Configuration Interaction?

o The Correlation Energy

o Slater's Rules

* The Variational Theorem

o The Method of Linear Variations

o Variational Theorem for the Ground State

o Why are Coupled-Cluster and MBPT Energies not Variational?

o Application of the Variational Theorem to Other States

o Convergence of the Wavefunction

o Variational Theorem Bounds on Excited States

* Reducing the Size of the CI Space

o Symmetry Restrictions on the CI Space

o Classification of Basis Functions by Excitation Level

o Energy Contributions of the Various Excitation Levels

o Size of the CI Space as a Function of Excitation Level

o The Frozen Core Approximation

o Truncated CI is not Size Extensive

* Second Quantization

* Determinant-Based CI

o Introduction to Determinant CI

o Alpha and Beta Strings

o Restricted Active Space CI

o Full CI Algorithm

* Bibliography

* Index