Greek mythology I encountered fairly early (I think I was 11 or 12) through a copy of Gustav Schwab’s book (and was absolutely captured by the stories). Nordic myths followed much later (early 20s), with my most loved book being the version by Tor Age Bringsvaerd.
Yes, forgot to mention this: there’s an isometric map of Talagaad and a bird’s eye view map of the larger Talabheim area. Also some tokens that you can place on a battle map.
I bought the PDF, but it‘ll probably be next year before I really get to read it in detail. But I could share e.g. the table of contents if that helps you.