The Porktown Fishwrap has a page, here, dedicated to explaining how to watch a political debate.
They have tips for what to do before after and during the debate. They explain what a debate is and offer some blather about the importance of the political debate in American history.
Here's my advice. Get drunk. Get fucked up as hell. Use whatever ya got. Get wasted and sit in front of your TV in your underwear and scream and holler at the damn box. Feel free to heave empties at the thing. You might consider putting some chicken wire up in front of the screen if you have an expensive set or just use a cheap old TV that you won't mind smashing or throwing out the window.
It's just not that difficult.