There are so many basketball organizations in the world that apply different set of basketball rules. You would see the NBA operates differently from the international Olympic basketball games. The former have a game divided into four quarters whereas the later divide the game into 2 halves. There are other numerous variations which I will not describe in detail here. What will be listed here are some common rules that are used at all level of basketball games. So here are some ground rules:
No shouldering, holding, pushing, tripping, or striking in anyway to the opponent. (be nice to your opponents).
If the ball is out of bounce, it shall be thrown into the field and played by the person first touching it.
The ball may be thrown with one or both hands.
The dribbler was permitted to shoot. The dribble was defined as the "continuous passage of the ball"
A player may only dribble once - A player cannot dribble the second time after holding the ball with both hands.
A player cannot run, or travel with the ball.
Any goal made outside of the outer circumference counts as three points.
A jump ball will be called two players withheld the ball from play for three to five seconds (depends).
If a player go to the floor for a looser ball, getting up is a travel. It’s better to push the ball to a teammate or risk jumping ball.
The defense can be moving and still draw a charge. If a player on defense has what referees call initial guarding position (both feet and the torso facing the opponent), he is in legal position to draw a charge if the offense slams into him.
A player cannot swat the ball away once it started downward toward the basket. It is identified as goal tending.
Kick balls are called based on intend. A pass can hit your foot, but not be a kick. And another one that hits you on the knee could be, if you took a swipe at the ball as it was going by.