The loading and firing a muzzleloading firearm is a pretty impressive sight. Before attempting this process yourself, make sure you have an experienced muzzleloader shooter around to show you first and answer any questions you might have.
Always read the owner's manual for any firearm before taking it out to shoot.
When loading, always ensure the firearm is pointed upward and away from your face and body.
Use a stable rest for your firearm to prevent tipping.
Check to see if the muzzleloader is loaded by inserting a pre-marked ramrod into the barrel.
When the mark on the ramrod disappears into the barrel, the firearm is unloaded.
You can now safely begin to load the firearm; make sure to follow the manufacturer's instructions.