Been there, my recomendations;
-Buy Jerry's book, it's worth every penny-plus some.
-Don't underestimate the prior suggestions on the correct screwdriver. Trust me.
-A revolver is a very interesting mechanical device. Like many others it only comes apart right one way and only goes together one way.
-Remember where everything goes.
-For the love of every S&W, DON'T pry the side cover off. It has a very specific fit and a notch. Take the screws out, flip it over in your hand so you catch everything and whack the grip area of the gun with the wooden handle of a hammer, a light quick rap works fine. The sideplate will fall out along with the connector bar, everything else will stay in the gun at this point.
-When dissassembling the rest be carefull on the force you use and what you pry against as you don't want to damage anything or bend any of the pins.
-Did I mention to buy the book? (Brownells)