Here's how the book is organized: Section 1 is an 8-chapter course that gets you started with Python fast. By the end of this section, you'll be able to use functions and modules to organize a program that uses file I/O to read and write data. Section 2 builds on that foundation with additional skills every Python programmer needs. Section 3 dives into object-oriented programming. And section 4 brings it all together as you build realistic database and GUI applications.