After my graduation I want to prepare for Civil Service Examinations like CDS (Combined Defense Services) Examination and Air Force Common Admission Test so please suggest me some best books for preparation of CDS and AFCAT?

There are several books available in market for CDS Exam and AFCAT Exam.

You also purchase books online. There are several shopping websites provides books for both exams.

Best Books for CDS and AFCAT Exam
Let's Crack AFCAT - Air Force Common Admission Test 2017 Paperback – 2016
by SSBCrack (Author)
Rs. 299/-
Paperback: 478 pages
Publisher: Shaurya Publications LLP; First Edition edition (2016)
Language: English
ISBN-10: 819310871X
ISBN-13: 978-8193108710

AFCAT: Air Force Common Admission Test Paperback – 2014
by Arihant (Author)
Rs. 295/-
Paperback: 464 pages
Language: English
ISBN-10: 935141826X
ISBN-13: 978-9351418269

Solved papers practice sets 2011-2016 (AFCAT) Paperback – 2016
by Arihant Experts (Author)
Rs. 100/-
Paperback: 188 pages
Publisher: Arihant Publications; fourth edition (2016)
Language: English
ISBN-10: 9350942712
ISBN-13: 978-9350942710

Let's Crack SSB Interview Paperback – 2017
by SSBCrack (Author)
Rs. 351/-
Paperback: 288 pages
Publisher: Shaurya Publications LLP; First Edition edition (2017)
Language: English
ISBN-10: 8193108701
ISBN-13: 978-8193108703

AFCAT (Air Force Common Admission Test) 2017 Paperback – 2016
by Arihant Experts (Author)
Rs. 257/-
Paperback: 454 pages
Publisher: Arihant Publications; fourth edition (2016)
Language: English
ISBN-10: 9350943409
ISBN-13: 978-9350943403

AFCAT Topic-wise Solved Papers (2011-16) with 5 Practice Sets Paperback – Jun 2016
by Disha Experts (Author)
Rs. 69/-
Paperback: 208 pages
Publisher: Disha Publication; Second edition (1 June 2016)
Language: English
ISBN-10: 9385846744
ISBN-13: 978-9385846748

The New AFCAT Guide with 10 Past Papers (2011 - 2016) Paperback – Jun 2016
by Disha Experts (Author)
Rs. 136/-
Paperback: 436 pages
Publisher: Disha Publication; Third edition (1 June 2016)
Language: English
ISBN-10: 9385846876
ISBN-13: 978-9385846878

SSB Interview: The Complete Guide Paperback – Import, 2014
by Dr. N.K. Natarajan (Author)
Rs. 135
Paperback: 352 pages
Publisher: Jaico Publishing House; First edition (2014)
Language: English
ISBN-13: 978-8184955699
ASIN: 8184955693