Hello aspirant,

SSC CGL is conducted in 3 Tiers:

SSC CGL Tier - 1 Exam (Objective) - Exam mode: Online

SSC CGL Tier - 2 Exam (Objective) - Exam mode: Online

SSC CGL Tier - 3 Exam (Descriptive) - Exam mode: Offline mode

SSC CGL Skill Test - Mode - Offline

You can check syllabus for all Tiers using below mentioned link.

https://competition.careers360.com/articles/ssc-cgl-syllabus

Exam pattern for each Tier of SSC This different. You can check below mentioned link for SSC CGL exam pattern.

https://competition.careers360.com/articles/ssc-cgl-exam-pattern

Best Books for SSC Preparation are listed below.

1. Perfect Competitive English

Author: V .K. Sinha

2. Objective General English

Author: SP Bakshi

Publication: Arihant

3. NCERT Maths from Grade 6 to Grade 11

Publication: NCERT

4. Quick Learning Objective General English

Author: R.S Aggarwal & Vikas Aggarwal

5. Magical Book on Quicker Maths

Author: M Tyra

6. General Knowledge

Publication: Lucent

7. Modern Approach to Verbal & Non-Verbal Reasoning

Author: Dr R.S. Aggarwal

8. NCERT Books of Class X, XII- History, Geography, Economics

Publication: NCERT

*It is advised to refer NCERT books for better marks and to get clear idea about concepts.

Visit below mentioned link to get more information about Best Preparation books for SSC CGL exam.

https://competition.careers360.com/articles/ssc-cgl-books

I hope this information was useful to you.

Good Luck!!