Obviously the wiki is a great resource as it contains the collective wisdom of many PF gurus, but I wanted to bring up something I found the other day. I was just poking around on Coursera and edX and found some personal finance courses that are free to audit, e.g.:
Be aware that the middle one is from SoFi instead of a university like most of the other courses, and I haven't taken any of them so I can't speak to their quality. Whether or not they trust these sources depends on what they mean by mainstream financial literacy I suppose.