Background

I am trying to figure out the CSS thing. I thought I would try with changing the background on this blog. As you can see it is not working. I am trying to get one of these backgrounds on there instead of the solid color. But I am not sure how to do that from a background that I have to download onto my computer. If each background had its own webpage I could handle it. But this is beyond my knowledge right now. If anyone has any ideas I would appreciate them