These links offer good resources:
http://www.suite101.com/content/help-for-parents-of-teenagers-a323009
http://lifestyle.iloveindia.com/lounge/tips-for-parenting-teens-11002.html
and this link talks about being uncool to your teen:
And this link discusses the dilemma of when to set limits:
http://www.npr.org/2010/12/20/132142172/when-to-guide-when-to-let-go-of-teenagers
and here are some other helpful links: