What every amateur photographer needs to know ~ There are three settings that control the exposure of your camera. They do not act independently, they work together. ALWAYS. They are APERTURE, SHUTTER SPEED, and ISO. In order to be able to really control your camera you must understand what each setting does and how they work together
Another pinner says: "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!"