Here’s an article about photo editing software that makes good suggestions. The best choice for many non-professionals is Adobe Photoshop Elements, a very powerful program without the steep price or hideous complexity of the full Adobe Photoshop program. On the other hand, Microsoft Picture It Platinum Edition is loaded with features and is incredibly easy to use. (Personally, I find Adobe’s products to be impossible to figure out. Even Photoshop Elements left me with a headache. I use Picture It for just about everything.)