Welcome to the addictive world of Mosin Nagant ownership. There are numerous threads in this forum to get some background, As far as cleaning goes there are almost as many methods and suggestions as there are actual rifles...here's one I put up a while back.
The link below is also a great source of info for all things Mosin and is really helpful in identifying many of the markings found on these rifles. You will need to know some basic info for conversation and description...receiver type: hex or round, armory: Tula (arrow in star) or Izhevsk (arrow in triangle), date of birth: 1942, etc. All info can be deciphered from the markings...have fun!
"The whole of the Bill (of Rights) is a declaration of the right of the people at large or considered as individuals.... It establishes some rights of the individual as unalienable and which consequently, no majority has a right to deprive them of." (Albert Gallatin of the New York Historical Society, October 7, 1789)
"A free people ought not only to be armed and disciplined, but they should have sufficient arms and ammunition to maintain a status of independence from any who might attempt to abuse them, which would include their own government." - George Washington