So I hve started a series on my youtube channel that helps people out with certain gametypes in Call of Duty 4. It's called Learn and Improve, and it has good games by me where I commentate and explain what I'm doing right and what I'm doing wrong. It also has some general good tips for beginning, intermediate and advanced players who want to get better. Here are the links to the most recent videos, all of them are one my website however. You can find all of my videos in my signature.
[ame="http://www.youtube.com/watch?v=ytJi6RuoHig"]Learn and Improve #1: Team Deathmatch[/ame]
[ame="http://www.youtube.com/watch?v=kE3evkk6u4I&feature=channel"]Learn and Improve #2: Domination[/ame]
Learn and Improve #3: Search and Destroy