Useful podcasts or websites to keep up with Amazon SEO trends?

Hello everyone, I recently switched from doing on page SEO for a company that wanted to imrpove visbility on Google to working for a publisher selling on Amazon. Could you provide any useful tips for websites or podcasts to keep up with the latest Amazon SEO trends? In my previous job I used searchenginejournal.com, ut they don’t post much about Amazon. Any suggestions are much appreciated-thanks in advance!