Management is hit or miss some supervisors and managers are awesome people while others you try to avoid if possible. You can keep taking more classes to deal more games, and once you've completed them all you can become a supervisor.
Base pay starts at under $5/hr tips usually average about $18-$20/hr. The first few weeks are really awkward, but then it becomes really fun.
The initial paid training makes your days very long if you're currently working.