Before You Pay to Promote Your Podcast - DO THIS
Your Podcast Consultant - A podcast by Dave Jackson - Venerdì
I was in a Facebook group and someone asked, "What are your tips for getting more listeners to your podcast?" and the very first comment was, "Marketing.. Facebook ads" and while there were other decent suggestions, many of the suggestions were BUYING promotion (Facebook, Google Ads, etc). You need to make sure it resonates with your audience first.