Here are some great "free and objective" guides to personal finance. Currently, they have information on Bond Basics, Bond Investing Online, Credit Cards, Investing, Life Insurance, and Beijing, China for some reason - I figure they're planning on making more travel guides. The Investing guide also has a nice one page summary. If you want to see a sample a Radical Guide entry, check out this post on why Air Mile Reward Cards are generally a bad idea.
If you're looking to learn more about economics, a number of good, free books have been posted on TBR's economics textbook archive. Check out the 329-page Introduction to Economic Analysis from the California Institute of Technology. A shorter alternative is Economics in One Lesson. You might also enjoy these Ten Recurring Economic Fallacies.