Well I found this still unread on my ancient kindle which I am going to throw out as it's now obselete with no security updates for the past 2 years! But I love it, it would be like letting go of an old friend. However there are quite a lot of books unread on there which is why it's going to be getting a bashing this year.
This St John Ambulance Asociation first aid reference is dated 2017, so am assuming that it's the 2015 one being reviewed by others on Goodreads. It is fairly interesting, but having held first aid certificates all my working life, having to renew every 3 yrs, it seems a tad odd. Then I realised it's the Canadian version!! So they do things a little different to the British. If you knew no first aid at all then I suppose this would be a bit useful, but it is dated and we have moved on from then, so it's not totally reliable for today's use.
I loved the idea of finding 3 men and taking off their shirts and getting some poles to make a stretcher to carry off a patient, in the UK you are advised to only remove a person if their life is in immediate danger, otherwise wait for the paramedics to arrive. And the process of turning these shirts into a stretcher by buttoning them and turning them inside out and then threading the next shirt but in the reverse, ie reversing each shirt, so the first one if say facing right then the next one is facing left, then last one right, would probably take someone who isn't a scout quite a while to work it out and get it right, meanwhile your patient has quietly expired on the ground next to you.
I think I would give this a miss and look for an up to date version which would be more suitable to the UK. That would be best!