Here are some sites for you to explore
http://www.bbc.co.uk/nature/environment/greenliving/
http://www.care2.com/
http://www.cesul.org.uk/

As you become more environmentally aware you might like to consider supporting various campaigns on a enviromental theme
http://www.greenpeace.org.uk
http://www.foe.co.uk
http://www.livingearth.org.uk/

Considering alternative energy sources http://www.cat.org.uk/