Specifications include, but are not limited to: Heartsaver Instructor Essentials Online. Heartsaver Instructor Essentials Online is the self-directed, online portion of the Heartsaver Instructor Essentials course. The Heartsaver Instructor Essentials course is designed to prepare Instructor candidates to teach AHA Instructor-led and blended-learning courses. Candidates who successfully complete the course receive access to a printable certificate granting them entrance to the hands-on, faculty-led session. (BLS) Instructor Essentials Online. BLS Instructor Essentials Online is the self-directed, online portion of the BLS Instructor Essentials course. The BLS Instructor Essentials course is designed to prepare Instructor candidates to teach AHA Instructor-led and blended-learning courses. Candidates who successfully complete the course receive access to a printable certificate granting them entrance to the hands-on, faculty-led session.