http://algebralab.org/lessons/lesson.aspx?file=Algebra_LogarithmProperties.xml- Jonathan- This link explains all the properties and has some practice problems for each. *Note, the description under property 4 goes to number 3, number 5 goes to number 4, and number 3 goes to number five.*
http://people.richland.edu/james/lecture/m116/logs/properties.html Alex Benmayor - Notes
http://people.hofstra.edu/Stefan_Waner/RealWorld/calctopic1/logs.html Nick V- Notes + practice problems