Good sources of help include:

• Drupal Handbooks
• Drupal.org Forums - for asking questions and searching for answers
• Drupal.org Groups - over 400 specialized Drupal groups, including ASU's
• Lullabot - great articles and video tutorials
• Drupal Dojo - Drupal training and tutorials
• Drupal School - a sort of weekly podcasts

Other helpful sites to know about are:

• Modules - a complete list of contributed modules available for you to download
• Drupal API - for all the files and functions in Drupal
• Drupal Modules - ratings and helpful reviews
• Drupal Theme Garden - themes for 4.7, 5 and 6
• DrupalSites.net - Drupal showcase