Tweaking Drupal

Hacking core is killing kittens! But what to do, if there is no module to cover your needs and you don't see a clean way out?
In this session we will make Drupal behave the way you want it. We will
write a small module and discover the hook concept, an important part
of Drupal's core awesomeness.

Thomas held this session at Drupal Camp Sofia in April 2012.