Hii aspirants

let me clear your doubt.

to become an ias officer you have to qualify UPSC examinations that occur in three stages: Preliminary, Mains and Personal Interview.

To prepare for this exam you have to work very hard. Its not an easy task. So first of all start your preparation  with the basic NCERT books of Class VI-XII of History, Geography, Economics, and Science. For a properguide  and full booklist you can visit Mrunal's blog or Unacademy's website (Roman Saini's lessons). It will be very much helpful for you. Also Develop a habit of reading The Hindu daily to be updated with current affairs.

For more information on UPSC exams like the syllabus and as such you can visit the site of career 360 whose link is given below

Https://competition.careers360.com/exams/civil-services-examination

I hope my answer will be helpful for you

Good luck