PhotoShop 5.0 LE is a version that used to come when you bought a Scanner as a freebe in the package. It works, but certainly lacks too many necessary things. I think that Elements is probably a better bet for you. I've noticed that Elements comes with many of the new Digital Cameras, but I don't know what version it is and have never loaded it on my computer. I think you can probably get a legal version of PhotoShop 7.0 for a reasonable price.
The trick to good photography is to learn where to point your camera and when to push the shutter. The EYE is more important than all the technical stuff.