I'm always on the lookout for more material about it in English! I've only seen one tv series about it and I need more! :) Anything from strategic level accounts to individual accounts would be totally awesome. :3
Preferably by non-western historians if possible.
https://www.reddit.com/r/AskHistorians/wiki/books/wwii#wiki_eastern_front
The askhistorians booklist has an absolutely huge section on the eastern front, I'd say start there.
For Novels, try "Life and Fate" by Vasily Grossman.