Curses and muttered execrations! Have you found those lovely lines of stars rating movies/products/travel destinations/ restaurants, etc., etc., useful? Yes? ME, TOO!! I have relied on ratings and customer reviews to help me make purchasing decisions, but alas, no more. My gullible self recently got a reality check when I read The Perils of Five-Star Reviews from BBC News regarding 'shill reviews'.
Shill reviews are reviews that are not legitimately from customers, but self-serving reviews either paid for or written by those who have something to gain. Now one has to read even customer reviews with a critical eye. If it sounds too good to be true, it probably is not a legitimate review. Read the article and learn how to be a more-informed consumer.
Lucky for you, the information you get at your library has been vetted, and found worthy. Start there first.