To see ledger working, simply run the script ./ledger bal. The ledger file is a bash script which sets up some parameters for including all of the ledger files in the project. Ledger-cli is required for this script to work.
Other commonly used commands:
./ledger --sort d regto get a list of transactions sorted by date../ledger --sort d printto get an alternate format of transaction sorted by date../ledger bal Bank: Asset:to see if I am broke or not../ledger bal Receivable:to see who owes me money../ledger bal Payable:to see who I owe money.
Please read the ledger documentation for a complete list of possible ledger commands.