piece identification
N - knight, B - bishop, R - rook, Q - queen, K - king, Pawn moves use no letter eg.1.e4 is pawn to e4. The board is a grid of a-h across left to right and 1-8 up, from whites perspective.
how long have you been playing?
Welcome to the chess world. No serious person is going to laugh at you. Please disregard the asinine trolls who frequent the internet, this site included.
The posts above seem to answer your question. If not, more questions should get you to where you want to be.
All of these are correct. Additionally, "O-O" is castling short (kingside). "O-O-O " is long castling (queenside). "+" is added after the notation to indicate check (so Nf6+ means that the Knight moved to the f6 square, not placing the opponent's King in check). Furthermore, "e.p." is sometimes added to indicate an en passant capture; promotion of a pawn if notated by the pawn file equals piece it promotes into, or sometimes parentheses are used instead. An example is a d pawn promoting into a Queen notated as: "d8 (Q)" or "d8 = Q". Upon the end of the game # indicates checkmate, "1-0" means that white wins, "0-1" means that black wins, and "1/2 1/2" indicates a draw.
These are some notations that I think are commonly left out. However, different organizations/clubs/scorekeepers etc. may use different symbols, or shortcut techniques such as "cd" meaning c-pawn captures d-pawn although I prefer to write it more formally "cxd4" ("x" means captures, and the "4" here means that this c-pawn doing the capturing is now landing on the d4 square). I hope this helps. If the notation appears confusing, it is because chess is rich in complexity - but this notation is a way to describe what occurs on the board simply; it may take a day or so until you become familiar with it, but it is simple once you get the hang of it (like anything else).
I hope this is not too long of a response, or simply read from the elegantly short response from Rocky64