I think that learning CPR and other medical procedures is essential for life and if come across a situation where someone is unconscious you can apply your skills from the lesson you have learnt.
Also I learnt about the DRS ABCD A meaning checking the airway B meaning you try and check for breathing C meaning CPR if person is not breathing and then D meaning to use the deliberators.
DRS is meaning D stands for danger R stands for response and S stands for send for help.
So that is what I have learnt in the CPR lesson we had.