Transaction is the key concept in the budget software. A transaction is any movement of funds, such as expense, income or transfer of money from account to account. A transaction must be associated with one of the accounts (or two accounts in case of money transfer from one account to another).
To see transactions associated with a certain account, you need to select this account from the left list. You can sort transactions by any field and change column width. By right-clicking the header, you can select columns to display. You can drag columns by headers to customize their order.