Hi, There are 4 sections mainly in this exam. Let me guide you with the preparations for SSC CGL accordingly.

Quants: This section includes the basic questions to check your numerical ability. The best strategy is attempting only those questions first that are easy to attempt and have fewer calculations. You need to start from basics. Build concepts gradually and practice as much as you can. Memorise all the important shortcut techniques. Some of the important topics for SSC CGL exam are:

Number Systems

Simple Interest & Compound Interest

Time & Work

Time & Distance

Profit & Loss

Percentage

Average

Ratio and Proportionly.

There are many more topics in this.

English: You need to learn basic concepts of English Grammar. Read good English magazines and newspaper to improve your reading skills. Learn new words daily, revise them frequently. Some of the important topics for SSC CGL exam are: Reading Comprehension

Spotting the Error

Parajumbles

Idioms & Phrases

G.K:

The syllabus is very wide and covers all the topics be it GK, History, Polity, Geography, Life Science and current affairs. Read NCERT books from class 6 to 10 to improve your knowledge of History, Geography and polity.

Reasoning:

Reasoning is purely based on logic and is not just a mathematical skill where you learn various formula s and the work is done. The only strategy here is to practice all the type of questions as many times as you can. Some of the important topics for SSC CGL exam are:

Blood Relations

Syllogism

Statement and Conclusions

Directions

Seating Arrangements

Ranking

*If you are weak in maths, give it more time and if you are good at it, don’t neglect it altogether. 

This is how you can take the control over your preparation. 

Do mock test for each and every topic so that you can analyse well both your weak as well as scoring areas. Good Luck.