I think a decent care sheet can be a good place to start one's research, just to get oriented. After that, research might best consist of talking to people (IRL and online) and seeing what they do and recommend and most importantly why they do and recommend these things -- then the keeper isn't just doing the right things but understanding why they're right and why she should do them. And just like IRL, try to get to know people you're talking to online. Some are coming at things from an odd angle that isn't apparent right away; some are worth listening to no matter what they're talking about since it is likely to be very wise; most of us get a bunch of stuff right but miss the boat on some things.
YouTube has a lot of good things about it, but keep in mind that virtually everything posted there is posted for views (especially the flashier productions). There are some areas of very helpful videos there (equipment repair tutorials come to mind, for those of us into chain saws and things), but much reptile care stuff is clickbait.
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