I live in Pakistan, I'm alone I want to get divorce from husband but don't know where to go or what to do, I am separated from him for 1 year please guide me with your advice?

Until someone from Pakistan answers:
Assuming your marriage was recorded with the government, you find out where in your town, city, or county/provincial offices that handle divorce and file papers. The papers might be complicated and without a lawyer or copies of someone else's, you might have a difficult time, I don't know. Here in the US the spouse has to be served the papers, and if he can't be found, you have to show that you tried. The process can take quite a while.

Find a local lawyer, and let him guide you to the proper legal service.