I'm greatly enjoying my Nikon D70 but am struggling to use its "manual" modes. The owners manual is hopeless and I've looked through available titles in bookstores that either presume a level of sophistication I don't have or gloss over the fundemental details I believe I need to know. I use the manual focus mode (I have both the 28-70mm and 70-300mm Nikon lenses) when the auto focus fails (more frequently than I'd care for) or needs "help" but I've missed a few shots when the D70 and I disagree about whether a picture is viable. The best advice I've received is "shoot pictures; see what happens" but I'm hoping for a more reliable suggestion. Thanks in advance.