Books for jee main/advanced(aieee/iit jee)

[smart_worker]

I have finished studying NCERT but still i am not clear with concepts. I have halliday resnick,hc verma and Feymann's lectures for physics,for chemistry i have morrison and boyd,solomon and fryles,j.d. lee. While for maths i only have hall & knight's higher algebra. What other books must i use?

 

[Vanadium 50]

If you are not clear with concepts, it's probably better to spend more time with the books you have rather than to collect more books that you won't understand either.