Should I prepare for CAT

Guys I'm in my 3 year btech from NSUT DELHI ECE , will pass around with cgpa of 7 my profile would be 9/7/7 ..I have not done coding till now ..but seing the placement nearby I want to start DSA..seing our college brings tons of companies...but I have money constraint FOR MBA ( target is FMS ) ...what should I do. I don't want to be in corporate forever.( Seing it's uncertainty.) Want to own a business