[Crowbob]

Read at least two news aggregators. Watch network nightly news of your choice with a weekly nightly cable news/commentary rotation including FOXnews.

Keeping tabs on the biases of print media is a good idea, especially the opinion/editorial pages, by reading at least one major on-line paper preferably from your home-town.

That should get you started. Later, you can adjust to suit. Confirmation bias is comforting in that it affirms your mis-beliefs, so beware.

If you don't have the time, The Three Stooges on video would suffice.