Hey, Im trying to make a 3d object for a movie im doing, this will be my first 3d experiment and I choose to do a pokemon theme, I need to make whats called a pokeball

(google image if confused). I can make a ball, I just need to know:
1: How to do the line in center and circle thats pushes out
2: How to make top red and bottom white
3: How to make the ball shiny and realistic

Thank you so much, as this will be great for my movie making,
Thanks as always
Lunixninja