First thing you need is to find out if your TC 'Hawken' is an early patch grabber. Early Hawkens from TC had breeching problems. Run an oiled patch, fairly tight fitting to the bore, to the bottom of the barrel. If the patch is grabbed and you have to fight to get it out you have a dangerous gun. Only cure is to buy an aftermarket drop in, already breeched, barrel and replace the bad original. Use the original as a fence post.
If it is OK
. Then buy your loading and care goodies.
I disagree with btmickinney about Bore Butter. I would fight to keep it out of my county much less use it.
But, then, much of the traditional ml game is disagreements. Preferably over a campfire.