2.) Turn off your appliances!  Don't just put your appliances on standby, turn them off.  Also perhaps buy energy saving lightbulbs.

3.) Wash your clothes in cold or warm water, not hot.
If you wash two loads per week this way, the reduction in carbon dioxide is as high as 500 pounds per year, according to the Greenhouse Network.

4.) Cut down on your meat-eating (or better yet become a vegetarian).
Even cutting out one meal of meat per week can have an impact! 

5.) Use your car less!

• Walk or bike to where you want to go. This saves petrol and money, while improving your cardiovascular health and reducing your risk of obesity.
• Lobby your local government to increase spending on footpaths and bike lanes.

6.) Don't drink bottled water!

• Use a water filter to purify tap water instead of buying bottles.  Bottles are expensive and it generates large amounts of plastic waste, not to mention the transport costs and energy. 
• Bring a reusable water bottle, preferably aluminum rather than plastic, with you when traveling or at work.  

7.)  Shop Ethically; Buy fair-trade coffee and other “fair” food.
Fair-trade coffee protocols guarantee farmers a decent price so they can earn a living wage.This site links to forums on everything from hybrid cars to “tightwadding” to wind power.
http://www.ecoforums.com/

8.) Make your own compost.  By having a compost bin, this cuts down on waste at the landfill and is also very good for your garden plants.

9.) Make an organic flowerbed!
http://pennsylvania.sierraclub.org/northeastern/organic.pdf

10.)  Learn more about solar energy!
The earth receives more energy from the sun in just one hour than the world uses in a whole year, according to SolarBuzz. Here is a fun resource: http://www.eere.energy.gov/solar/educational_resources.html#science