There’s a small but in my opinion highly underrated youtube channel by a Swedish linguist that’s got a lot of relatively short videos with a lot of concise information on Old Swedish/Norse/Germanic etc. and how they relate to one another. Some videos are in Swedish and some in English, you’ll see which ones are which pretty easily. If you have any interest in this kind of thing I can recommend it:
https://youtube.com/@tidsdjupet-mr5ud?s ... h9Rgd_Jbbq