Here's the reading list for my undergraduate Forensic Psychology course. You can buy the books for less than $150, and you can access most of the articles online for free. (Too bad that the Dave Nichols article on Jeffrey Dahmer isn't easily accessible; it might be the best article ever written about a serial murderer.)
“Reading maketh a full man; and writing an exact man. And, therefore, if a man write little, he need have a present wit; and if he read little, he need have much cunning to seem to know which he doth not.”
Just think about how much more you will know about forensic psychology after you read all this. Exciting, isn't it? Try starting with one article a day for the next 10 days.
Lykken, D.T. (1995). The antisocial personalities. Hillsdale, NJ: Lawrence Erlbaum Associates.
Knoll, J. (2010). The "pseudocommando" mass murderer: Part I, the psychology of revenge and obliteration. Journal of the American Academy of Psychiatry and the Law, 38, 87-94.
Meloy, J.R. (2004). Indirect personality assessment of the violent true believer. Journal of Personality Assessment, 82, 138-146.
No author (nd). Famous American Trials: The John Hinckley Trial (1982). Retrieved from: http://www.law.umkc.edu/faculty/projects/ftrials/hinckley/hinckleytrial.html
SUGGESTED ADDITIONAL READING
Raine, A. (2013). The anatomy of violence: The biological roots of crime. New York: Pantheon.
Satel, S., & Lilienfeld, S.O. (2013). Brainwashed: The seductive appeal of mindless neuroscience. New York: Basic Books.