Years back when learning to shoot I remember the thinking was stick with a 50mm lens and stay on manual. It seems from what I have read about DSLR's the recommendation is to learn with a single medium zoom lens. But what about the program settings, unless I'm mistaken it looks like shooting in a pure manual mode has fallen out of favor. So while I'm learning do I leave the camera on P or chose either aperture or shutter priority depending on the situation.