Yes, courtesy runners are put in strategically for stealing bases, or having a better chance to score on any hit.
Courtesy runners are handled differently from one sanctioning body to another. Typically you can have a courtesy runner for the pitcher and the catcher each time they get on base. If you are seeing the same "courtesy runner" multiple times in one inning for anyone on base then you are likely seeing a base bandit not a courtesy runner.
No, the runner is not allowed to steal a base before the pitcher throws the ball.
A courtesy runner should never be on base if she has a spot in the line-up. A courtesy runner is supposed to be a girl who is not playing in the game at all. If you are playing with a continuous line-up, then the courtesy runner should be the girl who made the last out, or the least likely girl to get up in the same inning. This makes it so their situation will not happen.
NO
No. You don't have to steal. But you do have to advance to the next base if a runner is about to occupy the base you just left from.
The courtesy runner is credited with scoring the run.
steal of home
Just touch the runner on base.
Runner attempting a steal from first, or a runner caught returning to second base.
nothing if you leave early you better hope the pitcher pitches the ball and doesn't see you steal.
You can't steal first base. It's easier to steal second base off of a right handed pitcher because the right handed pitcher has his back to the runner on first, and therefore has a harder time trying to pick the runner off.
No stolen base awarded as the stolen base was uncontested.