I found this guide: http://bit.ly/UTT4T4
At first I was like... well... it'll cost money and you play good, no need to buy it, but now I know it is worth the money.
Though the website shows some marketing, but in the end all of the specifications are true: you learn how to hack the singleplayer and how to suceed in muiltiplayer (you learn how to use your class, you learn how to play the game, not how to do a specific guide of assignment).
And the best: free lifetime updates and step-by-step videos, that show you how to play !
OR YOU CAN: Hey guys gamerzfirst77 here and do you want to get good with all the update to date latest first person shooter games? http://www.youtube.com/watch?v=0qjc1iXze2M Check this out guys, and there is much more on the channel. Happy Killing!
-admiralrapp77 on psn. FREE