Lesson One: Creating a New Reminder
Let's right-click on the nnCron icon in system tray and select New Reminder in the menu.
In the dialog box which appears after that, enter the text of reminder and the time when this reminder should be displayed. Voilà! Now you only have to press OK button and nnCron will start the countdown.
When your reminder appears on the screen, it will look somewhat like this: