If you want to learn how to be a photographer, you should take a look Photonhead, this is a very nice photograph site, all talk about photograph, like skill, tips, photo editing, digital camera buying guide, especially to beginners. On this site, I found a very interesting tool that called Film and Digital Camera Simulator, it lets users take photos with this tool, and compare to difference between each one. Very each to use, just choose different settings, click "shoot it", it will display two photos side by side. It is very good for people who use DSLR camera. I think this is a very good camera simulator.
Film Speed Sim