Gaining Understanding and My Wisdom, Part V

How do I believe that I gain understanding and information about the first four questions?

Do I think I need to study? 

Is my own experience sufficient? NO, my own experience is not sufficient. 

If my answer requires sources outside of myself, should these sources be provided for me? I am skeptical of provided sources because the provider has a bias, but that does not mean provided sources are worthless either.

How do I identify wisdom? 

How do I know what I know? innate? learned? cultural? What do I trust as true? 

How do I know when to change wisdom sources? What do my core values have to do with it?