Colin Beavan over on No Impact Man asks the question:

Just wondering, if a friend decided they wanted to do something about the environment, how would you tell him or her to start? What’s the way in? What’s the most important first step?

Freshly Green is all about making it easy. Go after the low-hanging fruit first. In other words, do the easy stuff first. Switch to CFLs. Set the thermostat a couple of degrees higher (or lower, depending upon where you live). Don’t let the water run while brushing your teeth. Things like this that are no-brainers and don’t cost a lot to implement.

Once those have been ingrained as habits, look for the next easiest thing. Rinse and repeat.