PADI Divemaster and Instructor Exam Recreational Dive Planner
This is one that can really only be shown. So here are a few videos showing the basic use of the ERDPml. The most important thing to learn from these videos is the use of a diagram. If you use a diagram to illistrate what the question is asking, the rest should be easy.
There is a practice 10 question quiz at the bottom of the page.
Video 1 - The basic Dive Planning functionality.
Video 2 - The Surface interval mode
Video 3 - Questions about repetitive dive planning
Video 4 - Questions about surface intervals and repetitive dives.
Video 5 - Planning Multilevel dives.