hello,

Start with these books, these can be found in hindi medium too:

1.Microeconomics (Hal Varian)

2. Macroeconomics (Dornbusch and Fischer)

3. Mathematics (Sydsaeter and Hammond or Simon and Blume)

4. Statistics ( John Freund’s book on Mathematical Statistics or SC Gupta)

5. Econometrics (DN Gujarati)

6. International Economics ( Salvatore or Krugman)

Also try out the previous year question papers.

Hope this helps.

Good luck!