To get you started,
@Cole, making white smoke and putting holes in targets, first you will need the loading items. These are the adjustable powder measure, 0.015" thick patches, patch lubricant (raid the kitchen for some canola cooking oil or some dish soap and water), 0.530" round ball, 54 caliber cleaning jag, #11 percussion caps, powder and optional items such as a short starter and range/cleaning rod. As a starting powder, 2fg GOEX black powder is recommended (3fg is okay too). Because of storage regulations small quantities of black powder can be nearly impossible to find leaving the substitute black powders such as Pyrodex and Triple Seven in rifle grades.
Do clean the rifle thoroughly with rubbing alcohol to remove any storage oils or grease that may have dried out in the bore.
Watch some of the introductory videos that have been made by
@Bob McBride (Black Powder TV),
@B P Maniac Shooter, or
@duelist1954. A search on the forums should turn up any number of links. Perhaps you might want to get Dutch Schoultz's system for 94 pages of
Black powder rifle accuracy system - .
A starting load is 65 grains, measured in the volumetric powder measure. Lubricate a patch with your lubricant. Place the patch over the muzzle. Set the ball in the center of the patch and start the ball. You may be able to start the ball with your thumb or you may require some more force using the short starter. Seat the ball and patch on your powder. When you are at the place you want to shoot, cap the nipple aim and fire. Repeat as often as necessary.