How do you get to team deathmatch on mw3?

At the main screen it will give you a choice between spec ops, campaign, or multiplayer. Go to multiplayer. from there, go to xbox live and it will take a second to load your stats. from there you go to find match and it will be called team deathmatch. if you are doing this offline, then do the same thing except instead of going to xbox live, go to splitscreen