If we got to chat at the Cambridge "Working in the Media Event", I hope I was able to help in some small way with advice on science writing, freelancing and journalism. If you picked up the flyer or my business card, you will have my email address and I'm happy to respond to any additional questions you may have. The key piece of advice, if you want to be a writer, is to GET WRITING and do so passionately and poetically! Feel free to friend me on Facebook (or just like my Facebook page), follow me on Twitter, circle me on Google+.
Meanwhile here are a few, hopefully useful, links. The ABSW and NASW both have advice pages for budding science writers.
Association of British Science Writers - http://absw.org.uk
European Union of Science Journalists - http://eusja.eu
US National Association of Science Writers - http://nasw.org
World Federation of Science Journalists - http://wfsj.org
US Council for the Advancement of Science Writing - http://casw.org
Science Writers on Facebook - http://facebook.com/sciencewriters
AlphaGalileo - http://alphagalileo.org
NewsWise - http://www.newswise.com
Eurekalert - http://eurekalert.org