Civil Servant (IAS/PCS)

The Civil Services Examination is a nationwide competitive examination in India conducted by the Union Public Service Commission (UPSC) for recruitment to various Civil Services of the Government of India, including the Indian Administrative Service (IAS), Indian Foreign Service (IFS), Indian Police Service (IPS) and others services. It is the most competitive exam of the world. IAS is the best government job. As an IAS officer, you can help the government draft national policies on all subject and its implementation thus impacting the life of a common citizen. If you have a passion for contributing in nation building then even as an engineer this is the right job for you. If you want materialistic happiness and money, it is not the career for you.

There are some comman books that you have to finish.
History- Spectrum modern history And for better understanding grover and belhekar is good in marathi.
Bipinchandra indias struggle for independance(This book is bulky and for pre 2016 time is less) This is also available in marathi.
Indian Polity-Laxmikant is compulsory and for parliamentary bills you can refer PRS india.DD basu is available in marathi.
Economics-questions were not in depth you can read Ramesh singh or sanjeev varma but not both are required.Most of the time Questions were asked from current affairs.Deepsthambh is good for conceptual cleariry in marathi .
Geogrophy-G.C.leong is good and short book, orien black swan atlas is enough as well ncert 6 to 12.
Science-Most of the question related to current affairs like LIFI, PROJECT LOON
so make your current affairs strong as much as you can and read NCERT from 7 to 10.
Environment- Shankar IAS is best for this if you cover this book along with current affairs so it will helpful for you to tackle this topic question.
Art and culture-Nitin singhania's book on art and culture is best and comprehensive book as well CCRT website is useful.
Current affairs-daily reading the hindu otherwise indian express is sufficient and VISION IAS monthly magzine is best to cover all topics because they give subject wise affairs.
NCERT are fundamental books they are very usefull for building up your concept so you have to read geography, polity,history,Science and economy books respectively.