If you are willing to crack UPSC IFS exam then your foremost step towards preparation should be collecting contents of its syllabus and exam pattern. After getting aware with IFS exam pattern and syllabus you can start a strategic preparation which will be really helpful to you for acquiring considerable marks in the exam.
UPSC will conduct IFS Pre exam in May 2021; interested aspirants can start their preparation from now only.
Check Here the Complete Syllabus for IFS Agriculture