Rabbit Care sits in an awkward place online. Search for it and you get either product affiliate links or gatekeeping, with very little in between. This is a quiet attempt at the in-between: a small site about doing rabbit care at a sensible level, by someone who has been cleaning long enough to know which advice survives contact with reality.
The most useful place to start is diet and hay. Get that right and most of the common beginner problems disappear. litter training is the next thing worth your attention. Beyond that, the rest is fine-tuning.