The way you train the new hire is how they’ll train the next one. You’re writing the handbook with your attitude.

Training replicates itself. Whatever tone you use, whatever you skip because it is boring, whatever you convey about how much the work matters gets passed down intact to people you will never meet. A rushed, irritated handover creates a lineage of rushed, irritated handovers.

Slow the first week down more than seems necessary and answer questions as though they were good ones. Show the reasoning, not only the steps. Assume the person in front of you will be teaching somebody else in six months, because they probably will.