Go to the local bakery, buy a handful of tarts.  Throw them at your local typewriter repair shop.  Yell, "you've been tarted!"

Congratulations, you have successfully tarted a typewriter repair shop.

Apprenticing is the way to go before working for hire.  The shop in Bremmerton, WA was taken over by a younger guy who switched to full time typewriter repair/restoration, but before he went solo he worked for years under the owner.  Lots to learn, mfg'rs have different ways to adjust the same cat that changes across years and sometimes years on the same models.  Then there's by the book and real world.  I called Ace once over the perplexing instruction on carriage removal on an Olympia SM portable.  His replay was: "Leave it to the German to make it difficult.  Here's what I do"  I followed his advice and all I could think was "brilliant".  I figure at least 4,000 hours manhours to get competent, and that's just a start.

I started in the typewriter trade at 17, but by the time I was 21, I already had the equivalent of 8 years experience.  How ?  As a teenager, I was working for a local typewriter dealer (had a company car and an area to cover by 19), was doing Saturday morning overtime in the workshop there, preparing machines for sale, then travelling to the next town and doing the same for a rival firm all afternoon and into the evening - whilst at home I was repairing typewriters for yet another firm who used to collect and deliver machines to my house.  Rather an intensive apprenticeship, but I enjoyed every minute !

The newer shop in Bremerton WA (Typewriter Fever) is set up as both a retail shop and a museum portion.  I assume the museum operates as a non-profit and might help with the building overhead costs.

And I vaguely recall when they first opened up, they may have had a small cafe spot in the building as well.

Matt, have you moved forward with this venture ?