Hi logansmom6--

You're going to need some image editing software. Many cameras (and scanners) come with a simple package "bundled" with the product. In general, you will probably want to use a "lossy" JPEG (.jpg) format, probabloy at 25%-35% compression. This will dramatically reduce your file size, with little apparent quality loss on a monitor (can look pretty poor in a print-out, though.)

Take a look at the graphics programs on your machine. It's likely that something usable was included with one of your applications (or even your Operating System), even if you didn't get one bundled with your camera.