Hello Fajle Karim

Programming Language are basics for coding or any software development. So you need to start with C programming which is considered as basics. You can learn C programming by taking online course with minimum cost and with certification. Are if you have a habit of reading books then you can read the below book which consist basics and very simply language with will be understood by everyone. Here are few books which are consisdered best.

• Learn C the Hard Way
• C Programming: A Modern Approach
• Lets us 'C'  

Other then that you can start learning C programming with help of youtude many of the youtuber have explained C Programming in a good manner and in a easy way. 

Hope you will get sccessed in Learning C programming And become a expert

Regards