For those who have never build a basic workflow, take a look at the DiceGame. This simple workflow just edit the title of the item, on which the workflow has started. The new title contains a number from 1 to 6. In the more complex DiceGame you will learn how to create a task if the number of the title is higher than three.
ow... I almost forget to say that there's also a next tutorial (making an initiation form on the DiceGame)