Hey,

The key factor to outshine or achieve good score in any exam is the Self Study. No matter how good the coaching and it's materials are if you don't do self study it's all in vain. You need to be focused and keep on practising on regular basis.

It's always said that it's better to study one book multiple times rather than reading many books. Try to follow the same thing. Read the materials or the books you find yourself comfortable with. If you understand the material of you coaching well you should go for that only.

Stick to one and practice as more as possible.

Hope that helps.

All the best.

Thank you