For the new syllabus, which papers should I take for mains and which magazines and books should use for IAS exam preparation. I am a software engineer and completed my Btech in IT in 2010.

Hi Satya, As per the information available with me, IAS does not offers an optional subject in Computer science/ IT, you can opt from the various subject options available depending on your prior education like Physics, Chemistry or may be as per your sole interest like Political science, History,