Here is a good video by PatrickJMT that reviews logarithms and their properties.  It covers:

• the graph of a logarithmic function
• the definition of logarithms, illustrated with some simple numerical examples (similar to exercise 13.4 on HW#8)
• the properties of logarithms, and an example of using the properties to write a logarithmic expression in terms of elementary logarithms (similar to exercise 14. 2 and #2 on Quiz #3)
• solving exponential equations using logarithms (similar to exercises 14.4 & 14.5)