Free Digital Reference eLearning Codes

Scuba Diving International (SDI) provides free digital reference eLearning codes for its professional members. These codes help instructors prepare for courses by giving them access to the same materials their students will see. The eLearning courses are frequently updated and include useful features like downloadable PDFs, bookmarking, and note-taking. Members can request codes for any courses they teach, allowing them to create a personal digital library for reference and study.