[Koha] KOHA use

Hi. I have a book collection and I'm looking to organize it. Mostly I want to find the Library of Congress classification for each book and order them on the shelves that way (e.g. PN6231.E4H3). It would be really neat to be able to search the collection too and to let friends see which books I have. I have found a few programs that might do this (one, tyrannio, does almost exactly the above but doesn't work). Koha looks promising and it runs. Does KOHA support the LC call number? Where should I look to add it (I'm a computer scientist). Thanks. - Daniel Holth