How do I start?

Create an account and add your car; that is free and needs no documents. Then drop an invoice or a work order on the car's page. Your first few scans are free.

Carnoat reads it in the background. At the top of the car's page, under "New since your last visit", you check what was read, correct anything that is off, and confirm. From then on it is part of the car's history.