I frequently scan Quora for interesting perspectives on life. I really like to learn from the personal stories of individuals. Of course, you have to take everything with a grain of salt, as Quora is not peer-reviewed or scholarly supported, but exactly this raw and unfiltered content makes it attractive.

You can learn best from the mistakes of others. It's a kind of wisdom of the crowds-approach.

(I don't work for Quora, nor do I participate in their partner program)