Hello Aspirant,

I can feel that you are very keen in learning new things. Make yourself strong in some programming languages like 

• Java
• C++
• Pyhon

Even if you cant learn the complete thing since it will be difficult, have a brief knowledge about it as it will give you better power to learn coding in future.

Cheers!

Hello

You should have a strong grip over mathematics, Basic computer working and basic networking. Mathematics would help in getting on subjects such as AI  or ML. Basic computer working would help you to troubleshoot basic stuffs and so is for networking.

You should also start learning languages such as C

hello yamuna,

The topics in which you should be ready before you join cse are,

1.You should know or get an idea regarding coding.

2.if possible get coaching in any computer language like C or C++ or JAVA.

3.Learn basics of mathematics.

4.Be ready for doing good coding,

Hope this answer helps you,

Goodluck,

Thankyou.