Welcome Spies,
I wish you the best of luck with your GPR. After putting together a few kits, I believe that they are sound, dependable, and accurate rifles. There are a few discussions out there now that will assist you with lubes, patches and ball size. Do not count on the ramrod that came with the kit for cleaning and loading and general duties. It is for hunting and emergencies. Get yourself a "rangerod" (I like metal with a brass bore protector) that is stronger and a bit stiffer than wood. Before you shoot, be sure to clean the barrel with very hot soapy water with a very hot rinse. Now I never put oil in my barrel, instead using some of the more natural lubes, but each person has his own thoughts on the subject and you will have to make up your own mind about patch lubes and preservatives. I wish you the very best with your new rifle. Welcome aboard!
C F