Haven’t got a 32 cal but from what I’ve seen, 0.310” round balls with a 0.010-0.015” patch with 10-15 grains of FFFg is the go.
I believe they use no. 11 percussion caps.
You can buy pre-lubed patches or lube your own. Some use spit, others moose’s milk (50:50 ballistol and water) or a bullet lube mix of bees wax and olive oil.
You’ll need a powder flask and measure, push rod and cleaning gear.
To clean after shooting I strip the barrel from my muzzle loaders, remove the nipple. Give it a quick brush with a wire brush to loosen up the crud then pour boiling water down the barrel. Follow that with another quick brush and then patch it out until it’s clean.
A bit of shotgun choke lube on the thread of the nipple keeps it easy to unscrew.
Then give it a quick oil and reassemble for storage.