This detailed document (Over 250 pages) for SAP Business One, Version 9.2 is the latest iteration of this overview which goes through module by module, screen by screen for most setup and configuration and use cases for SAP Business One.
Here you should be able to find whatever you need for your SAP Business One implementation, service or support needs.
If you want hand holding through your implementation and training, feel free to click on the chat button below.