I'm maybe 135 hours or so in, just finished the regional phenomena quest, and am trying to get through a bunch of the side quests and adventures before moving on to the next Main Story quest. I've only looked online for a couple of items so far, but as I end up with quests that I'm still interested in completing (but not sure how to progress on them), wondering if anyone has a particular site or guide they've used for the game?
Zelda Dungeon is a good resource for all Zelda games; it has a good interactive map (make an account and you can save which items, locations, or events you’ve completed) and walkthroughs of many quests. It’s a bit behind on some TOTK stuff though, as I think they’ve been shorthanded recently. I’ve also found Polygon to have good info as well for all sorts of walkthroughs (especially shrine guides), armor lists, etc.