Jake, Being green means different things to most people. Some of the best advice I can give you as an Energy Auditor is start saving by reducing. Reducing your consumption is the easiest way to save and be greener. This doesn't have to be just energy it can be anything. The next thing is use what you have. Buy quality items and materials and keep them around and when they have to go recycle, reuse, find an alternative to sending it to the dump. Use paints, cleaners, and even furniture that are more environmentally friendly.
For the home itself reducing consumption is good also. CFL and LED lights are a good option especially for the lights you use often. Low flow toilets, shower heads and aerators are inexpensive. Programmable thermostats are another good option. Keeping the heating, cooling and water heating equipment serviced is inexpensive every few years. Sealing air leaks is always worth wild. When in doubt hire an Energy Auditor like myself.