Lots of ways to play the game but I would agree with pmcombs to start. Light capture Dorothy with either right loop shots or plunger shots all the way around. Capture Dorothy. If you shoot ramp and right loop alternating you will likely lock Dorothy and lock one or 2 balls for ECMB. The easiest way to get your first high score is to start rescue multiball with 2 locks in ECMB. Then shoot for the ramp. Since you should have a short timer to put balls back in play you can concentrate on the ramp and not worry too much about losing balls depending on how many seconds that timer is set for. Once you have 2 modes going your scores will go up dramatically. Getting crystal ball at the same time is great unless it is no hold flippers or weak flippers......

All of a sudden you will have a 6 or 700,000 game (and wonder how you got there)

Also narrow the exit on the castle playfield. You will have to remove it though to do that. That helps get rescue multiball.