1. Use a tripod! A flat surface will only allow you to shoot straight, and shooting the moon means that you'll be shooting up and constantly re-adjusting the tripod as the moon moves throughout the night.
2. Use a shutter release cord, remote or the camera's self timer if you don't have one, so that you don't move the camera when pressing the shutter release during a long exposure.
3. Use a zoom lens and zoom in as much as you can to the moon. It's okay if it's not a super fancy lens, this was shot using a 15 year old $100 lens. Focus in on the craters and details on the moon.
4. ISO 1250- 1600, so that you can use as fast a shutter speed as you can without losing detail-the longer the shutter speed, the more chances you have the camera will shake even slightly in the wind, resulting in an out of focus photograph.
5. Aperture priority of f/5.6 since you are not worried about capturing any details other then the moon.
6. Bracket your exposure, meaning over expose and underexpose the photograph from what the camera is telling you. Generally the camera will overexpose the moon, so you'll get nothing but a white blob in the sky. Use the exposure compensation button (the +/- button below the shutter release) and change the exposure to -0.5, then -1.0, then -1.5 and so on, until you start seeing detail in the moon. You may go as far as -5.0 exposure compensation to get what you need.
7. Take a fair amount of photos and keep refocusing as the night progresses. The photographs may look focused on the camera's display, but you won't really see if they're completely in focus until you upload them onto your computer screen.