I don't think I have the 3rd Edition Rulebook, because mine is second-hand bought.
The link i provided above is the 3rd edition rulebooks for the core game and every expansion. Every question you've asked, except for how to play one particular card, is answered in those rulebooks.
I am believing that the current Player gets to mess with his Enemy Players by moving the Zombies in their direction. Right?
The rules (quoted above) say that the player gets to move zombies. It places no restrictions on which zombies or which direction they can move.