The document discusses getting involved with open source software communities like Drupal. It recommends starting by picking a project of interest and using/testing the software. Ways to participate are spreading the word, joining mailing lists/forums, helping others, and filing bugs. Contributions could include writing, design, support, code, or translation. Participating provides philosophical benefits of sharing knowledge and practical skills-building. DrupalLadder.org teaches skills for contributing to Drupal core through lessons and issue sprints to work on core issues in teams.