Hii, 

Chemistry: NCERT most important. Other than that, for reference, use OP Tandon, Pradeeps, Morrison and Boyd etc

Maths: Start with NCERT, RD. Then go ahead with A Das Gupta, MCQ in Maths etc

Physics: Start with HC Verma. Then go ahead with IIT JEE Questions directly. Dont go for any other crap books.

Practice previous year IIT JEE questions MANY TIMES. Become perfect in them. Solve other people’s doubts. These will help you score better :). People run after so many modules and crap test series. Instead you should focus on limited material and do it more number of times !! Many questions ask only basic concepts but a good clarity in them.

Best Wishes. 

Hi. The list will help you:

1. Concepts of Physics by H.C. Verma- Volume 1 and 2

2. Complete physics for JEE main by Irodov

3. NCERT books for chemistry (theory)

4. IIT Chemistry by O.P.Tandon

5. Complete chemistry for JEE main by NCERT

6. IIT Mathematics by RD Sharma

7. The Pearson Guide to complete mathematics for JEE by S L Loney

Thank You!

Following are the books that I recommend and are recommended and used by many top rankers--

FOR PHYSICS

1. NCERT (you should try it's exercise and examples)
2. Concepts of Physics by HC Verma(it's like the holy book for jee physics)
3. Problems in General Physics- I.E. Irodov(tougher questions deepen your understanding on subject)

(If you are in any Coaching then coaching material is also very good)

FOR CHEMISTRY

1. NCERT (still a must for jee chemistry)
2. Organic Chemistry - LG Wade & Peter Sykes (these books can be taken as the truthful source for jee chemistry) and * MS Chauhan for practice
3. Physical Chemistry - Coaching material and RC Mukherjee
4. Inorganic Chemistry- JD Lee (for concepts) but mostly stick to NCERT

It can be best learnt by practice of large no.of questions, I have used * Coaching material and * problems in inorganic chemistry by V K Jaiswal.

FOR MATHEMATICS

1. Comprehensive Mathematics for JEE Advanced (McGraw Hill)
2. Problems Plus in IIT-Mathematics (A.Das Gupta)