In order to complete the textbook exercises you will need to download the exercise files. Then you work on them to complete them, as instructed in the book. Each chapter has its own exercise files.
The exercise files for the Foundation Flash CS3 for Designers book are found here: http://www.friendsofed.com/download.html?isbn=159059861X
The exercise files for the Foundation Flash CS4 for Designers book are found here: http://www.friendsofed.com/download.html?isbn=1430210931