Income — includes salary, bonuses, dividends, interest income, allowances,
and so on.
Expenses — includes dining, rent, travel, clothing, entertainment
and so on.
Transfers — transfers between accounts such as savings.
Adding a new category
Goto the Categories section, either by selecting 'Categories' from
the View menu, or by single-clicking on the Categories icon in the
document window toolbar.
Single-click on the Expenses icon on the left-hand side of the window.
Select the Expenses folder by single-clicking it.
Single-click the "Create category" button, placed directly
below the list of categories.
Enter the category details, once you are finished press the 'Done'
button.
Tip: This procedure also applies to creating
new Income and Transfers categories.