Basically all of the medicines work by tweaking how your neurons react to various neurotransmitters, either at transmission or reception. The problem is, these don't target, their effect is throughout the entire neurosystem.
One of the best sources of information I have seen it Sapolsky's lectures on YouTube, he is a professor at Stanford. He does a really good job explaining what is actually going on inside the body, although it can be difficult to read further without a solid grasp of biochemistry. I did pretty well in organic chemistry in college, and got A's in it, but never took actual classes in biochemistry, only read books in my spare time on that, and I have had some difficulty sometimes.
Basically what I am trying to say is be careful, psych meds can really ruin your life if they aren't perfectly balanced, and it it almost impossible to get them perfectly balanced even if you have the best psychriatrists in the world, and you probably won't have the best. Unless your condition is already crippling, don't touch them. But by all means consider going to a therapist.