Question

how can it be made a common practice among the people of community

Answer 1

First Aid is the provision of immediate medical assistance to an ill or injured person until definitive medical treatment can be accessed, or until the illness or injury is fully dealt with.

It generally consists of a series of simple, potentially life-saving steps that an individual can be trained to perform with minimal equipment:

The principle of first aid is immediate action.
Any action taken needs to be careful and deliberate and the first-aider should remain calm at all times.
The first priority is to yourself and other bystanders. Assess for danger and think before you act. There may be gas - risk of explosion or asphyxiation; electricity - the pool of water around the faulty washing machine may be live; fire - opening a hot door may be the last thing you should do; assault - the assailant with a knife or a gun may be behind the door awaiting their next victim or a hostage; blood - avoid unnecessary contact with bodily fluids by wearing gloves and a face shield if available.
It is important to assess the situation quickly, to appreciate the limitations of your own actions and to seek expert assistance - eg, by calling 999/112/911 for ambulance, police or fire service help as soon as possible.
See separate Adult Cardiopulmonary Arrest, Ventricular Fibrillation, Coma and Resuscitation in Hypovolaemic Shock articles.

Severe bleeding[1]

Put on sterile disposable gloves and a face shield if available.
Calm and reassure the person.
Lay the person down.
Apply firm, direct pressure using a clean pad (or sterile dressing if available) over the wound. The person's own hand can be used to apply pressure whilst getting a suitable dressing/putting on your gloves.
Whilst applying the direct pressure, elevate and support the injured area above the level of the heart.
Firmly wrap a bandage around the pad or dressing to hold it in place but not so firmly that it cuts off the circulation to extremities.
If blood soaks through the pad and bandage, do not remove but cover with another pad and bandage, continuing to apply pressure to the wound until bleeding is controlled.
Monitor for symptoms of shock: pale, cold or clammy skin; rapid breathing; rapid or weak pulse; reduced level of consciousness.
If symptoms of shock are present:
With the person lying down, raise and support their legs above the level of their heart (continue to keep the injured part elevated as well).
Loosen any tight clothing around their neck or their waist.