To first understand Norse mythology, you need to understand the Norse people:
The Norse were a sea-fairing people of settlers, raiders, conquers, and traders. During the Viking Age (793-1066 AD), they sailed from their homelands in Norway, Denmark, Sweden, and Iceland, to explore new lands and seek vast riches.
The Norse had their own religion, which was shaped by the unforgiving and beautiful landscapes of ancient Scandinavia. Before the Norse people’s eventual conversion to Christianity, their religion thrived. Fragments and remnants of this Norse religion has been passed down to us, and the central elements of it are now what we call ‘Norse mythology’.