Learn to build a component-based Drupal 8 or 9 theme in this comprehensive video series. Explore core, contrib, and custom themes, plan your Drupal theme, and create custom themes both manually and with the Theme Generator. Dive into Pattern Lab integration, JSON basics, and Twig syntax, including advanced concepts like includes, embeds, extends, and blocks. Master Drupal attributes, global styling, and component building for headings and movie cards. Enable Twig debugging, create new content types, and utilize the Components Library Module. Integrate components with Drupal through template overrides, field mapping, and Twig blocks. Build and integrate a card collection component, completing your journey in component-based Drupal theming.