I have cleared the SSC CGL exam with a rank below 500. Before I suggest you what books to refer, let me give you a scenario you are in. Your friends or other competitors are buying many books, you meet them every day in the park or the coaching class, or you talk on phone, they tell you all the new things that they learnt from the new book, and why the book you are referring to, let's call it 'x' is so outdated and would not get you anywhere. You think about it for while which puts you in a dilemma. Whether to buy it or not. The type of situation you are in, where you just want to clear the exam by hook or by crook, your insecurities overpower you and you realise that you need the NEW book that your friend referred you with, else you will lose out. You go to the book store, buy that book and come to your room with a sense of satisfaction that now you are also in the league of those who will clear it. But will you clear the exam now ? Off course not. ...
