How to take pictures of the moon at night with my Canon Rebel XS?

I just got my camera about two months ago but I've never tried to take pictures of the moon yet. I am an aspiring photography and want to learn more about night time shots. Do any of you know a certain mode that would be good, or exposure or shutter speed? Also, I don't have a tripod so I would have to make a man-made one, with a chair or something. Thanks!