"Sure, it's incredibly valuable to know the ins and outs of the technical side of photography. I'm a huge advocate of that and I've paid my dues. You should too. But understanding the fundamentals of light and the mechanics of a camera and all the techno babble that's all the rage online these days can only get you so far. DO use the back of your camera, and don't feel bad about it. Hell, go ahead and use a light meter and a 4x5 if you must - see if I care. Read reviews. Nerd out on gear. Whatever floats your boat. But one thing is for sure: don't ever confuse all the silly little gadgets and the silly little numbers with what it means to simply and eloquently capture a moment, a scene, or the essence of a human emotion - whatever it is that truly inspires you. You'll be much better off for it, I promise."