Training new hires without becoming their full-time tutor
If training a new hire means you stop working for two weeks, the training system is the problem, not the hire.
Record once, train forever
A 10-minute Loom video of you walking through a process beats explaining it live for the fifth time. Build a library of these as you go. Future hires start ahead of where the last one did.
Pair, don't lecture
New hires learn faster shoulder-to-shoulder with the person doing the job than in a classroom setup. Pair them with your best, not your most available.
Check for understanding by having them teach back
After a week, ask the new hire to walk you through the process. Gaps in their explanation are gaps in your training.
Take your version of this question further
This is one business owner-tested angle on the question. Your shop, your size, your trade, and your team change the answer. Ask your specific version inside Ask a Shop Owner to get a response grounded in how owners like you actually handled it.