In this chapter, you learned how to store and retrieve data using a number of different programming constructs, including constants, variables, arrays, and structures. You learned how to specify data type, to convert data from one data type to another, and to control variable scope. You also learned how to add comments to your Visual Basic applications and to work with the ProgressBar control. Before you move on to Chapter 6, "Applying Conditional Logic," take a look at the following challenges and see if you can improve the Story of Mighty Molly.