Chart of account

I want to do entries of all my expenses either cash, credit card or cheque to individual work order to know after completion of work how much profit from individual work order

how should I do my entry and how should I do my chart of account

Please advice

Under Settings - Tracking Codes you could set up the work orders, then you would select that tracking code when entering the transaction. Your Chart of Accounts would only contain the primary accounts, not work order specific sub-accounts.