Yes, it is common for game testers to be required to do on-the-job training to complete their certification requirements. www.gametester.com offers more information on that subject.
There are several companies that employ video game testers. Some of the companies do offer insurance for the testers since they are full time employees.
Video game testers do get paid, but the salary depends on the manufacturer. they can get paid up to 90 $ an hour
Nothing
Beta testers play the game and PVR's record there game play.
None of your buisness
Some of them do. Most do not.
I think Bungie is.
They Get From 25 - 100 Dollars An Hour .
There are many companies that might be wiling to hire young games testers since they are their prime consumers. For example, the major video game companies such as EA games.
Testers were people who tested the game. The game is not testing now, so you cannot be a tester.
None. Its volenteer but you get to keep the beta game.
Programmers, artists, sound engineers, producers, game testers and game designers. :)