Ah, another convert coaxed away from the evil stuff that doesn't smoke. Welcome, cowboy.
Just clean it up as you would any revolver that uses smokeless powder - Hoppe's No. 9, CLP, whatever. Then thoroughly clean the inside of the bore and chambers with alcohol to remove any traces of the smokeless powder solvent; follow with dry patches until you're sure it's dry. Then coat the bore and chambers with a good mineral oil based rust preventative such as Ballistol or Barricade. That's it.
And stay away from that nasty smokeless stuff. It's not good for you.