I use the blue tongue skink dot net caresheet. Very informative, straight forward and there is a forum just for BTS keepers, with subtopics separated by species and subspecies.
Reptile Mountain is not bad.
I'm not a fan in keeping them in tubs for pet keepers, like BHB has a vid about it. So any vids imo saying that BTS would thrive in tubs, is nonsense to me because of their personality.