How many people wish they could maintain and/or service/modify their own tube equipment?

I know many people attempt to repair and/or modify their own tube amps and tube preamps with poor results. They don’t know what to modify, how to troubleshoot to repair, have poor soldering ability or even just how to maintain it. My question is if you were able to have someone teach you on-line one-on-one via Zoom or Skype would you want to learn to do it yourself? Do you think this might be a good idea in these troubled times? What would you be looking for?