Do you know any sustainable farming/organics projects I can get involved in?

You might start by stopping by your local farmer's market.

Depending on your area of interest (green business, community supported agriculture (CSAs), social justice, ecology, government regulations, GMO foods, soil science, etc.) you may also find some useful information on the following sites:

www.bioneers.org  
www.oaec.org  
www.ecoliteracy.org  
www.orionmagazine.org  
www.resurgence.org  
www.wiserearth.org

The Bioneers in particular has an archive of lectures/program on sustainability and organics. Their free radio program, Revolution from the Heart of Nature, may even be available at your local community radio station.