Throw in Mechanics

[Beemer]

I'm a 3rd year official and I wanted to know (hopefully an evaluator will read this post) what the CORRECT mechanic is on throw-ins. Not what people most often do, but the by-the-book mechanic.

To clarify, which hand would you chop the clock with if you were in these situations, I've also heard that can depend on where the table is (so they can see), and even which hand you want your 10-second count on (if your new trail). So take a look at these situations:

1) you're at the division line for a throw-in to start the new quarter.
2) you're on the baseline in the front court of the team on offense.
3) you're right infront of the bench.

Do you chop with the arm away from the player, or the hand closer (meaning you have to hand the ball across your body)?