If you want to book your seat in Indian railway, you need to create your profile on IRCTC website. With this website, you have to select destination code and boarding code with travel date. The system will redirects you to trains to your destinations. Select your favorite train, tier type, time of train and then proceed. You will redirects on reservation form. Fill the form correctly with name, age and seat side. With the submit button, you need to pay with online. You will get your PNR number online.
Provide your correct address and valid phone number for doing this.