Blogger\Photographer says: I don’t know about you, but if I could only use one tool in photoshop for the rest of my life, it would be Curves. It can do so much! Not only can it lighten up your images, but it can make your colors and contrast pop by making an S curve. To do that, just add a second point in the curves window, and drag it down a bit. This is pictured here.
I always direct anyone asking me about my camera (and how to use it) to this site. Its all explained so simply, and taught me how to start using my DSLR. My sister printed it out and keeps it as a reference in her camera bag. Great idea!