Hey can u help me out with the study material required for preparing cat?

Heya thanxx..i have been thru d linkk..n yea have got sum questnss answeredd..m nw kinda clear bout were to start with..😀 thanxx!😀

Hello people, i am in 3rd year n my branch is computer and technology..i am olready latee bt still i am confused from what should i start with my pg...