Are you looking for an entry-level introduction to general accurate shooting? Or is there a specific type of shooting that you are interested in?
A number of things are universal - mental focus and discipline, trigger control, sight picture, breathing control, etc. There may be some specific differences (e.g. the way you pull a shotgun's trigger when shooting skeet vs. a handgun's trigger when shooting IPSC vs. a handgun's trigger when shooting slowfire bullseye vs. a rifle when shooting offhand slowfire vs. a rifle when shooting prone slowfire with a sling or a rest), but learning how to do any one kind of shooting well, gives you skills that are largely useful in another kind of shooting.
What do you already know, and what do you need next? Do you already know how to competently and safely shoot, but you now want to take the first steps to shooting more accurately? Or are you a bit beyond that? Have you already done any competition or serious accuracy shooting? Are you interested/willing to do organized shooting (e.g. competitions)?