Jhapali babu, you say "I don't want to go through laywer because they are too expensive."... wtf?? Aren't your family members going to apply for PR status once they get here?? You would have to use a lawyer anyway, so might as well go about getting one now and consulting the best/quickest/easiest routes available. BTW, check below for any questions you may have: http://www.usimmigrationsupport.org