Guidance needed for HD Satellite Recevier setup

Hello Respected members need help from those who are in Karachi. I want to have my own HD Satellite receiver setup and use my LED TV to its fullest potential. I love American TV Shows, Documentaries and Car Mods/Rebuild. How can I have such a setup and from where can I buy the needed equipment. I need initial guidnace rest I can do on my own. Thanks