You can use this page to email Christian Pelczarski about The "minimul" QuickBooks Online API Guide.
About the Book
The first goals of most QuickBooks Online integration projects is not only getting connected but to import and persist important QuickBooks entities like customers, vendors, items, etc. You will be surprised how many details you need to know in order to do these aims properly avoiding a poor foundation, which will lead to many bugs and support tickets down the road. Learn these precious integration gems from a seasoned QuickBooks integration professional and in the process enjoy saving money and time by erecting a fantastic groundwork that will make your app soar in profitability.