If you are a handy person and curious with some skill, my start was two people, one table, chairs and a few tools.
The largest issue was being nervous, even though being an engineer my whole life.
Skill is one of those things that develops over time, the repair is too often peoples stuff they are ready to throw away, so with courtesy and questions we can determine if two minds are better together to find a solution, where one individual can only remain staring at the box and never open it to look.
The landfill has millions of unopened black boxes of mysterious things called junk.
80% is repairable if the process begins and the knowledge builds.

Hi James, thanks for bringing this up. There is no tailored repair course material available yet, however, this is something that Repair Café International is looking into, precisely for the reasons you mention. It would be great if a Repair Café repairer course could serve as proof that you have the right skills and are safe to be a repairer at a Repair Café. We’ll inform our network when there is more news to mention on this subject.