The Ultimate Chess Playing Guide: The Be... - Chess:

Occupy the e4, e5, d4, and d5 squares with pawns and pieces.

Ensure you can checkmate with just a King and Queen or a King and Rook. Chess: The Ultimate Chess Playing Guide: The Be...

In the endgame, your King becomes an attacking piece. Occupy the e4, e5, d4, and d5 squares with pawns and pieces

Bring your Knights and Bishops out before moving your Queen. Occupy the e4

The first ten moves often determine the flow of the entire game. Follow these three pillars to ensure a solid start:

While strategy is your long-term plan, tactics are the short-term "tricks" that win material.