Check out Dan Cummin's historical podcast Timesuck. Episode 145, aired April 15, 2019, is all about Vikings! It's really good too. I learned a ton about my maternal ancestors. (1/4 Swedish via my mother's side of the family.)
When being a Norse god - If you are a male god (Loki) then don't turn yourself into a mare in order to lure away a mortal's work horse in order to cause said mortal to miss a deadline so you don't have to fulfill a bargain with the mortal. You may end up giving birth to Odin's new horse an you'll never hear the end of it!