Hi, my name is Kevin and i am new to the forum. I am interested in in selling stock photos for fun and for some pocket change. Can someone link me to a page that will explain what iso speed, exposure metering, etc means? I enjoy taking pictures and would like to make the most out of every option that my very cheap Kodak EasyShare813 8.2megapixle has. I would like to learn and understand why i need to upgrade my camera rather than buy an expensive camera with all the options and then be lost.