Doubt about Hashing

Hi, I am studying about how to make data storage in disc more efficient, and I know about a method that uses a Hashing Table and a Hashing algorithm, i would like to know if someone knows a place to learn more about Hash and how to create tables and a basic algorithm.
Thanks

There exists <http://eternallyconfuzzled.com/tuts/hashtables.html>, and see <http://eternallyconfuzzled.com/tuts/hashing.html> in regard to hashing algorithms.