There are three ways to read Underground.

1. Most convenient option:

Buy the print or ebook version at Amazon,, Waterstones, your favorite retailer/e-tailer, or borrow it from your local library. 

2. Most virtuous option:

Go to your local bookstore and order it (this hopefully means they will then stock it on their shelves).

3. Book group option:

Contact Hookline and get a 25% discount for your book group.