You can earn an easy 500 bonus miles online when answering questions about the WorldPerks program through Northwest’s WorldPerks University. Northwest WorldPerks has five informational courses about its frequent flyer program and partners. After you read through a course, you can answer three short questions and receive 100 bonus miles for each quiz you complete. Even if you get the answers wrong, you can continue to guess your way to the bonus miles. After you complete the quiz, you can also earn “extra credit” bonus miles. Each quiz has a different offer, such as an additional 2,000 bonus miles for booking and flying a roundtrip flight within the next 90 days or 1,000 bonus miles for making two qualifying purchases at the WorldPerks Mall. You can earn a total of 6,000 miles for completing all five courses and extra credit offers. If you’ve already visited the site to get miles, visit again because new opportunities have recently been listed. Visit http://www.nwa.com/worldperks/university