In a sea of information it’s difficult if not impossible to consider every possible perspective on even a single subject matter. Sometimes you have to pick one person that you trust and just stick with learning from them for the time being. Do a little research and try to base your trust on more than faith, then bury your head in the sand and listen to what that person has to say.
If you find the subject matter has substantial applicability to your life, or that you aren’t getting the complete picture, then pursue other experts in the same field. In the interim, it’s better to spend your time learning rather than fretting over who is the best possible source to learn from. Or, even worse, fretting over trying to simultaneously learn from every expert in a field and therefore learning very little.