Litter Training
Litter Training is the part of rabbit care that gives the most trouble to newcomers, and also the part that improves the fastest with deliberate attention. A few weeks spent on litter training carefully — rather than rushing to the next thing — usually outperforms months of unfocused practice. The improvement is not glamorous and rarely shows up in a finished result anyone else would notice, but it is what separates a frustrating hobby from a satisfying one.
The rule of thumb: if something feels off and you cannot say why, the answer is almost certainly in litter training. Slow down, observe, and only change one variable at a time. Keep brief notes if you can. After a few sessions you will start spotting patterns that were invisible at the start, and litter training will stop being a problem.
None of this is meant as the last word. rabbit care is a hobby in which experience reliably outperforms instruction, and the only way to develop that experience is to keep bonding. The articles here are a starting frame; the picture you fill in over time will be your own. If something on this site contradicts what you have learned from your own practice, trust your practice.