I am very worry about new merit system. This is like killer rules for newbies like us. As i know that if somebody gives merit rating only then our rank will grow. Without getting merit from someone we can't rank up from jr member. So, who will give us those merit rating? Is this rules for avoiding new comers in bitcointalk? I am truly feeling too bad.

Yes and that is it's intended function. Anyone that has an interest in contributing towards a healthy discussion on ANY topic related to Bitcoin or any other altcoins, can do it with a newbie account. Only people that care about their ranks ergo their potential farming opportunities from this place, they are the ones with the problem.
The merit system is in place to bottleneck that influx of new signature farmers that are shitposters.