Here's what I showed my step brother last year when he bought his first muzzleloader. Has some good information but not all the information you'll need.

CVA Black Powder 101
Intro to Blackpowder Hunting [*]Types of Muzzleloaders[*]Muzzleloader Calibers[*]Types of Propellants[*]Ignition Systems[*]Accessories[*]Muzzleloader Safety[*]Loading & Shooting a Muzzleloader[*]Cleaning Your Muzzleloader[*]"Blackpowder Guns & Hunting" TV Highlights