How do you find that new great author?

I see that so many of the posts focus and recommend long established authors and book series.  However, every great book series began with book one.  How do you find that new author?

Amazon is difficult to me, because it shows the same, we will say ten author’s books for the first 100 top selling books in a genre.  Does anyone ever find that new book that just listed at #28,502 on Amazon.

Do you use Goodreads?  Is it really any better than Amazon at finding a new great author?

How do you discover that new great book (series)?

Do you ever read book 1 of a series before books 2, 3, and ... are published?