IAS toppers recommend that aspirants start their UPSC preparation with NCERT books and then move on to the standard reference books.

The best IAS books can vary from candidate to candidate depending on their previous expertise and knowledge of the subject matter. However, the UPSC booklist recommended by experts are listed in this article subject-wise.

Choosing the right IAS exam books online for different stages of the UPSC exam is quite important. The UPSC Prelims comprises only objective type questions while the IAS Mains contains descriptive essay type question papers.