Why is it a good idea for anyone to learn first aid? How can being proficient in first aid benefit our mental health? First aid is the first and immediate assistance given to any person suffering from a minor or serious illness or injury, with care provided to preserve life, prevent the condition and situation from worsening, and to promote recovery. Courses give us the skills and guidance in knowing what to do in an emergency and deciding what sort of help is needed i.e. 999