As Dmitry Orlov, who saw the Soviet econonic collapse up-close says, "...of each important thing in your life, you will be prepared to answer two very important questions: "Is it collapse-proof?" and, if it is not, "What can I do to make it collapse-proof?" and if, for a given thing the answer turns out to be "No" and "Nothing", then the very important follow-up question should be:"How can I live without it?"
You can focus on individual solutions and head more toward the survivalist pole, or you can work toward community-based solutions. But if you aren't prepared to meet your own needs on every level you may not be as useful to those around you as you think. And on the other hand, the more you learn needs-based conservation the less you may have in common with the energy hogs around you! It's nice to see people thinking about conserving energy, but, as the first post mentions, out-of-control population growth got us here so keep in mind that, for survival of the species, you may have some life purpose other than DNA replication. That's where I tell most people to start their thought processes.
I'd go into more detail about what we do here (http://www.geopathfinder.com) , but as Obi Wan would say, the rest is just "simple tricks and nonsense".