There are rules and principles for different stages of a chess game, but in this post the focus will be on Chess Opening and the level of advice will be kept for beginner chess player in mind.
Rule #1 - Develop Your Pieces!
Development means to bring out your chess pieces from behind the pawn to center of the chess board. Development of pieces should be your first goal to achieve in the opening stage of the game. Development ensures your entire army is available when the action start in the chess game.
Generally, develop your minor pieces (Knights and Bishops) first. It is best to introduce Rook and Queen (Major Pieces) later in the game.
Rule #2 - Don't Move a Piece Twice Before Move 10!
This rule is obvious and needs no explanation.
Rule #3 Don't Bring Your Queen Out Early!
Queen is worth more than any piece besides King. If you bring her out early, she will become target of minor pieces of the enemy and you would lost your valuable time in defending her. So don’t bring queen out ealry!
Rule #4 Get Castled (Before Move 10)!
Castling will make your King safe. Try to achieve this goal within first 10 moves.
Rule #5 Attack (Develop) Towards the Center!
Controlling the center of the board is a useful time tested strategy. Besides, pieces are more active when they are at center of the board.
Rule #6 Connect the Rooks!
After castling, connecting the Rook is an easy task. If you have done this step, it means your minor pieces are out, you have castled your king and your queen is out on a safe square. You have nearly completed successfully your first stage of the game.
Rule #7 Develop Your Plans!
Remember that I have told your to develop your pieces, but it does not mean development without a plan. So, develop your pieces keeping in view some objective. This might be to develop Knight to attack a pawn or to develop Bishop to pin a Knight etc.
Rule #8 Attack "In the Direction" of Your Pawn(s) Structure!
Don’t take pawns lightly in the game of chess. Pawns are the only pieces that can’t go back. Their moves are of permanent nature. Learning to recognize and exploitation of pawn weaknesses is the key to understanding positional chess.
These are eight basic rules for novice chess player. Use them in your chess play and your play will definitely improve.