There are two links. The first one is a dropbox link to the iBooks format if you have an iOS device (iPAD, iPhone, iPod Touch...). The second one is a simple PDF of the same content. It's the same information in two different formats. Choose the one that suits your device the best.
1. iOS Device
https://www.dropbox.com/s/22t39joe9vzjcpu/awty%20the%20hill.ibooks
a. Click on the link.
b. Select 'Download'.
c. Select 'Open in iBooks'.
2. PDF
a. Click on pdf.
b. View or Download to your computer.