articleship

You have to select your area you want to work in like Direct Taxes, Indirect Taxes, Audit, Finance, Litigation ....

There is no Probable Questions, Suggested Answers Compilations for Big 4 Interviews

All you have to know is the basic knowledge of the subjects.Brush up on that particularly the area you want to specialise in.

Best of luck

Pick up the phone and start asking them one by one all the questions you have.