Front Page - NFL Playoff Challenge - 42 SB Swagbucks News/Tips

Found on the front page, under "Most Popular Ways to Earn".

Click the offer. If you have an account with NFL.com, sign in. If not register for an account. Don't have to do anything else. Instant credit.

I signed in with my existing NFL.com account and got instant credit. If you don't have one, I'd imagine you'll still get instant credit after you register for an account.