@ Shakeel,

"Sociology" by Horton and Hunt
"An introduction to sociology" by S.M Shahid

The second one is very simple and comprehensive, I suggest you to read it first and then start the first one.
All the best!

Regards,

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My ALLAH it is enough for my respect that I m "Your" person & it is enough for my pride that "You" are my GOD."You" are exactly the way I desire.Thus please mould me the way "You" desire.