Moves are written in algebraic notation: the piece's letter and the square it goes to. K means king, Q queen, R rook, B bishop and N knight; no letter is written for a pawn.
If it says 1.e4, the white pawn went to e4. Play it: e4.
Black played 1...e5. Now 2.Nf3: move the knight to f3.
Some symbols: x means a capture, + check and # mate. O-O is kingside castling and O-O-O queenside castling. For example, Bxf7+ means 'the bishop took the piece on f7 with check'.