Dear Student, 

I guess that aim to pursue MBA from IIMC from your question. For pursuing MBA from IIMC or any other IIM you need to appear for CAT after completing your graduation. There are following sections in the entrance :-

• Verbal and Reading Comprehension 
  
• Data Interpretation and logical reasoning 
• Quantative Aptitude 

So, reading any newspaper or magazine is not really necessary but what is necessary is that you focus on these subjects and study online or offline about it and get yourself prepared. Hope this might help you.