Textbook made by Zyante.com
The book contains exercises which will be assigned as the semester goes on. These are worth 5% of the class grade. The price of the book is $58.
If, for some reason, you cannot pay for the book immediately, mail to support@zyante.com and explain your situation. They can usually give you a couple weeks' free access, until you can pay for the book. Do not miss homework deadlines and assume you can make them up later.