1. General Knowledge
Books:
Lucent’s General Knowledge by Dr. Binay Karna
Manorama Yearbook 2024 by Mammen Mathew
General Knowledge 2024 by Arihant Experts
Websites:
Rajya Sabha TV - Big Picture Discussions
Jagran Josh - Current Affairs
Insights IAS
2. Mathematics
Books:
Quantitative Aptitude for Competitive Exams by R.S. Aggarwal
Fast Track Objective Arithmetic by Rajesh Verma
Mathematics for NDA/NA by R.S. Aggarwal
Websites:
BYJU's - Maths Tutorials
Khan Academy - Arithmetic and Geometry
Maths Tricks for Competitive Exams
3. Reasoning and Logical Ability
Books:
A Modern Approach to Verbal and Non-Verbal Reasoning by R.S. Aggarwal
Logical Reasoning and Data Interpretation by Nishit K. Sinha
Analytical Reasoning by M.K. Pandey
Websites:
Testbook Reasoning Section
IndiaBix - Reasoning Questions
Adda247 Study Materials
4. English
Books:
Wren & Martin High School English Grammar and Composition
Word Power Made Easy by Norman Lewis
Objective General English by S.P. Bakshi
Websites:
BBC Learning English
Grammarly Blog - English Tips
Exam English Practice Tests