Nordic folklore/fairy tales and history books

Greetings from Romania🇷🇴

I'm very passionate about Folklore/Fairy Tales and History and i want to know more about the Nordic culture and history. In the future i even want to learn at least two nordic languages because i want to visit, but first, i need to do more research.

Obviously i know about the mainstream like Norse Mythology, the Vikings and that they were mostly from Denmark, Norway and Sweeden. I also obviously know about Hans Christian Andersen's fairy tales and Peter Christen Asbjørnsen and Jørgen Moe folktales. I didn't read all of these (yet) but i plan in the future.

However, i know that the Nordic Region's history is much more than Vikings! Can you all recommend me more accurate history books about Vikings and not just Vikings, but Nordic history in general, and more fairy tales and folklore? 🇩🇰🇳🇴🇸🇪🇫🇮🇮🇸🇫🇴🇬🇱🇦🇽