ChessOps - Principles of DEVELOPMENT
There are many types of opening, but most obey the fundamental rule of
developing the pieces from the back rank as soon as possible.
To develop means "to bring one's pieces into play during the opening
phase" (The Oxford Companion To Chess).
The method and general order of development is as follows:
Also, never bring out the queen too early in the game, and do not move a piece twice early in the opening (losing a tempo) unless you really have no other choice. And finally, remember the strategy that he who controls the centre commands the game!