“Challenging” and “rewarding” is the best description of the course. You will learn to prevent and manage problems in the water base on the diving skills you learned before.
The most interesting part of the course is to face the challenge bravely and solve the problem. Most scuba divers describe the PADI Rescue Diver course is restrict, yet also rewarding. Eventually, they will say this the best course they've ever taken.
If you want to take PADI rescue diver course, you must be:
You are 12-year old or above
PADI advanced open water diver( or any equivalent certification from other authority)
having Emergency First Response Primary and Secondary care (CPR and First Aid) training within the past 24 months. You can ask your instructor about that.
How to save yourself.
How to identify and manage other diver's pressure.
How to manage emergency situation.
How to rescue the panic divers.
How to rescue the unresponsive divers.