Trying to tame a modern, fully-featured web application like Drupal can be an exercise in frustration.

• Why are you printing that piece of content there?
• Why am I seeing a negative integer instead of a string from this function?
• What could a PDOException in my Watchdog log possibly mean?

In this session we will be going over useful debugging tools and techniques that can help you start to see into the inner workings of all versions of Drupal, including the new kid on the block, Drupal 8. You will be better prepared to start building truly custom features into your projects and you'll be able to remain calm when you get the ineveitable email that your site is showing the dreaded White Screen Of Death at 4:45pm on a Friday afternoon.