Some useful resources - re: manuscript/literature databases
I was lucky enough to do a manuscript summer school at Reykjavik last month at the Arni Magnusson Institute (Árnastofnun). It was super helpful for my studies, but also, I realised, very useful for Heathens. (It was also very cool to visit Borgarnes and Reykholt etc, and to clearly see the places mentioned in the sagas, it helped me connect to my faith in a new way). I was also very grateful that there were heathens among the teaching faculty, as I know that several UK universities are not so welcoming.
https://clarino.uib.no/menota/catalogue/menota
https://clarino.uib.no/menota/catalogue/menota-rune (runestone/inscription database)
https://onp.ku.dk/onp/onp.php (this will be super helpful for trying to find attestations)
https://skaldic.org/m.php?p=skaldic (I imagine many of you know this resource already, but still).