No, your are only allowed to hit the ball three times, unless the first was a touch at the block.
The term for hitting the ball before it bounces in a game is called a "volley."
Three times.
Pass Interference
a double hit.
Yes, in volleyball, hitting the ball into the net is allowed as long as the ball goes over the net and into the opponent's court.
Your team can hit the volleyball three times before it goes over the net.
By hitting the ball over the boundary without the ball touching the ground before hand. If the ball touches the ground before the boundary but goes over it, it scores four.
After a walk, no. After hitting the ball, no, unless when he "touches" someone he is interfering with a play on a batted ball, in which case he could be called out for interference.
In tennis, a player is allowed one bounce to return the ball before it hits the ground a second time.
Waggle?
No, the runner is not allowed to steal a base before the pitcher throws the ball.
The action is called a bully. In modern field hockey, the sticks are only tapped (not hit!) once together, before the ball is in play.