Toppers Notes is an amalgamation of knowledge, hard work, and consistent efforts of various toppers of IAS, blended with the experience of teachers. Provides the best guidance into the IAS Syllabus for Pre & Mains. The latest edition of Notes. Topic-wise N.C.E.R.T– Source of knowledge recognized by the Indian government, which makes it an integral part of the UPSC exam. Daily Current Affairs – Important as a lot of questions are directly asked from current affairs. IAS Notes contains books covering the General studies syllabus for both UPSC Pre & Mains.