A good lesson reviewing and explaining the rules for using logarithms. The lesson has links to related topics.

Exceptional page explaining almost anything you might want to know about logarithms.

This site explains "What on Earth is a Logarithm?" It has examples and a logarithm calculator, as well as links to related topics.

This site explains Logarithms. The site has examples the student can examine and exmples the student can work and check online.

Use your knowledge of logarithmic properties in order to solve "exponential equations where x is in the exponent, but the bases do not match." This tutorial offers simple examples and practice exercises for you to complete and check.