Hello!

Self study is a really good option.

You can refer to MANORAMA YEARBOOK (Latest Edition), alongside reading newspaper daily. It can cover all your GK and Current affair related portions. For logical reasoning and maths, A large no. of books are available in the market, which are equally good.

You can even download Careers360 app which offers you mocks and tests to evaluate yourself.

https://www.careers360.com/app

Good Luck!