Coming May 11th Information on the upcoming update to D2L. Tools Manual Detailed information and step-by-step instructions for all tools in D2L. Self Registration Sites Listing of short, self-paced D2L courses that provide information, instructions, and best practices on selected topics. Video Tutorials Short video tutorials of the information provided in the Tool Guides section of the Help Pages. FAQs Answers to our most frequently asked questions. D2L guides, videos and resources for University of Arizona instructors.