Further reading on Personality Psychology:

http://pmc.psych.nwu.edu/personality.html

This site seems to be the most central in ACADEMIC personality circles and has a lot of good links, but while they may be of interest to the serious psychology student, they might seem quite dry to the average user.

http://www.faculty.ucr.edu/~funder/lab/index.html

Home page of lab of very well respected researcher - will give you an idea what it is personality researchers do!

http://www.ship.edu/~cgboeree/perscontents.html

An online textbook that will give the reader a basic background on personality psychology.