Open Reporting and set the dates first. Every tab uses that range.
Sales
Totals and the shape of sales in the range.
Inventory
Stock value, dead stock (quantity sitting that is not selling), and Stock Movement for a product.
Ledger
Customer and Vendor ledgers. Sale returns appear on the customer ledger under that name.
Finance
Profit and loss, receivables aging, top products, and top customers.
On Enterprise you can run the same report for one branch, all branches, or a comparison. See Store reports.
The file your accountant opens is Accountant CSV.
Next: Accountant CSV.