Q: How do I print in Windows 8 from applications such as the PDF reader?

A: Windows 8 applications provide a consistent interaction experience for the user. However, initially it might be hard to ascertain how to print. But after you understand the interaction model, it's actually very simple. 

1. Open the Devices charm (keyboard Windows key + K or swipe in from right and select Devices)
2. Select the Printer (but notice also access to additional screens and other types of device)
   
   Selecting Print
   
   
3. After selecting the Printer, set the options and select Print.

Learn more: Installing and running normal applications on Windows 8