It doesn't exist, but it's doable. The information presented therein wouldn't really be applicable to a cell phone camera; some of those are pretty darn good (iPhone, I'm looking at you), but they're best left to make their own choices regarding how to shoot. The gist of the matter is, not all details of technique are similar between classes of camera, much less individual models. So a sticky tutorial would be as much about teaching the basic terminology and procedures of photography and those few details universally pertinent to shooting coins (solid mount, parallel coin/focal plane, delayed shutter, lighting), leaving you the person who owned the camera to run with that information and use it just as the guide to figuring out how your specific hardware works best.