A big part of what chemicals etc you'll need will be based on what powder you use. At any rate you'll want a stout range rod since most rifle mounted rods really don't hold up well to steady shooting and cleaning. There are a variety available, some with t-handles, some segmented, wood, fiberglass, brass, aluminum etc.
For a variety of articles and viewpoints you could do a lot worse than to cruise on over to chuckhawks.com and look at the muzzleloader page.
Welcome to the sport.
Lance