Don't talk to the police. Though I am a huge proponent of law enforcement and law and order, this has been very eye opening. Things i learned: If you have nothing to hide you have nothing to say. If you have something to hide, you can not help the situation by talking. Unsure....... don't talk. Sitting on a Jury... The fifth is for the innocent.
Updated: This video , though produced by the ACLU is a good primer on your rights as a citizen and how to act when dealing with the police. I am not a fan of the drugs displayed in this or for the ACLU for that matter, but just substitute "whatever" questionable material for another. Just think of all the odd stuff you may have in your house or car that could draw attention to a well intentioned but very suspicious law enforcement officer.