A session for small shopkeepers on keeping an income and expense notebook

Many small shopkeepers cannot tell at day's end how much they really earned. Credit owed piles up and family spending mixes with shop money, so even a running business leaves nothing saved. Once a month hold a half-hour evening session. Someone good with accounts shows how a plain notebook with three columns works: today's sales, today's spending and credit. Keeping family money separate is taught too. Everyone brings their notebook and sees each other's. You need a place to sit, ordinary notebooks and one person who understands accounts.