How can I get rid of fat?

I am really interested in getting rid of some extra body fat that I seem to have put on lately. I don’t know how to do this though, since nothing I have tried in the past seems to have worked. Can anyone tell me how to get rid of fat? I don’t want to lose my muscle, just get rid of some fat. Would Fat Loss 4 Idiots help me to do this? I have been thinking of trying out this program, so I am looking for some more information on how this works to see if it might be right for me.