3. Tripods Are For Sissies
The salesman might want you to consider a tripod. Baloney. Real photographers don't need tripods. They're heavy, cumbersome, and consume time to set them up and fold them up. When a camera is mounted on one, you cannot swing it around fast enough to zoom in on that rare bird or action play on the field. They just get in the way and impede getting the shot in the thick of the action. If you're worried about hand holding a zoomed out lens, just remember to flip that sucker over to the action mode. It'll pick the shutter speeds necessary to stop the action and take care of any camera shake you might have.