If you actually bought the model that you posted earlier , it says it has musket ignition , and was built to comply with Idaho and Oregon regulations ..

https://www.sportsmans.com/shooting-...24in/p/1697016

You have a " new " gun . You can keep cleaning supplies simple. At least for a bit . All you need is 3 inch cotton shotgun patches , a 50 cal brush , hot water with some Dawn dish soap , a Q tip for the breech fire channel , and I would recommend a can of compressed air to blow out the excess water in the breech plug after you are done cleaning it.. Get some black powder solvent that gets the lead buildup out of the barrel . There are many of them that do a great job.

My advice is to clean it after every shot at the beginning until you are sighted in . After that every 3 shots just to see how it shoots as the barrel gets fouled.