Here's an interesting article about Content Marketing for you:
Start with your existing pages to identify opportunities, which typically involve some form of repurposing, reformatting and updating. Please visit Marketing Land for the full article.
If you are interested in Content Marketing, have a look at the article "AI in Content Marketing – Steven Morell at Dukascopy TV" here in the AX Magazine. Want to read the whole post in the Marketing Land Blog? Here is the link: https://marketingland.com/finding-content-marketing-opportunities-that-influence-search-performance-264798.