Step 1: Set Your Goal

You need to be certain about where you want your career choice to take you. Are you using a testing job to become a programmer, designer or business manager with the developer or publisher, or do you have no degree and just want to get paid to play video games? If you have a degree, then you'll want to apply to the human resources departments of several developers or publishers for whom you want to work. If that's not your goal, then you need to locate one of several game testing labs across the U.S. and apply for one of the positions they may have.

Step 2: Make Contacts

Make contacts with game developers. Testing jobs don't usually show up in the classifieds section of your local news papers. Developers often give the jobs to people that actively seek them out and have proven experience.

Step 3: Start A Blog

Start your own blog where you can add Google Adsense to it and start reviewing the new game releases. You will then have a blog to show these companies that you are contacting that shows you are serious about gaming.

Step 4: Study

Study as many consoles as possible. You should be intimately familiar with their specs. This will distinguish you from the vast majority of your competition, who will most likely be avid gamers with little understanding of the actual workings of their favorite consoles. You should understand each console's CPU, GPU, AV output, and I/O specs. For an example of the sort of specifications you will want to learn, see the Resources section.

Step 5: Make Contacts

Introduce yourself to every gamer, gaming professional, and gaming journalist you meet. Network with gamers and gaming professionals on forums and conventions, and write often to your favorite gaming magazines. You may want to create business cards, which will give you an air of professionalism and help your new contacts stay in touch. This is a great start to becoming a video game tester - More Below.

These are the most efficient classes in my opinion. It all depends on your game-play so this can differ from person to person.Modern Warfare and you can always search the site for more useful information about this game.