Find a great organization, community, grow as a Call of Duty Player

I am a Casual Call of Duty player, looking for a team that can teach me how to play the game better and to become a better player all around. I want to learn how to communicate through game modes such as Hardpoint, Control, and Search and Destroy. I always wanted to compete through Tournaments, but also to learn and grow as a casual player. I hope to find the right team that I will fit in.