Inspired by a link someone offered in another thread, to a YouTube video from an apparent "writing coach" who has, as far as I can tell, one self-published novel with mediocre sales to her credit, and no other credentials I can find... There are so many sources of writing advice in this world, and so much of the advice seems to be offered with a level of authority that seems completely unjustified, to me. I think we can sometimes evaluate advice based on whether it meshes with "conventional wisdom" and/or our own experiences, but if we already know enough to be able to evaluate advice and make that decision, then is the advice really needed, or are we just in an echo-chamber? Assuming we're looking for new ideas, things we might not have been able to think up for ourselves, where should we look? What credentials are valuable, what sources of authority should be trusted? When looking for "how-to" style advice rather than specific feedback, how do you guys decide whose advice to trust?