Contributing back to drupal can be a rewarding experience both in karma, reputation, and getting other people to test that code you just wrote that hopefully won't produce any bugs later. * Issue Queues -- Searching them, submitting an issue, contributing to an existing issue, etc. * Patching -- What situations to create them in, creating them, submitting them via issue queue. * Sandboxing -- What they are, and how they help both in creating new projects and in forking existing ones to develop patches against. * Modules -- Contributing your own module to the drupal community.