@@harish8271 final year la ponga. First sem la irunthu ellathaum cover pannunga based on gate syllabus. Old question a solve pannunga. Onnu vidama .solla pona coach theva illa. Neenga RU-vid la parunga free ya neraya video irukku solve pannuvanga , model paper poduvanga , iit Madras website la free materials irukku . Notes prepare pannunga.
Better to join Coaching institute..If you are a Excellent student like guys in IIT ,then I will say you can do self preparation..if not you have to join Coaching institute.because I'm an above average student. I did coaching in ACE Hyderabad (Don't go Chennai) .