How do I Prepare effectively for JEE 2017 from now ?

You must go through all chapters as per NCERT syllabus.You must clear concept and important point is you should master yourself the application of concepts.

Cover the syllabi for class 11th and 12th thoroughly encompassing both your concepts and practice.

Plan a well timed schedule to incorporate your school studies and JEE preparation. Prepare topic-wise notes for concepts and formulae for quick recap.

Follow specific books and once a chapter is covered, attempt as many mocks and sample papers as you can so that you can understand your proficiency level.

Some of the other books recommended for JEE Main 2017 by faculty and IITians are-

Physics:

H.C Verma- For concepts and numerical practice, the book incites analytical thinking too
Resnick and Halliday: An optional book to refer for concepts and examples
Dc Pandey and O.P Tondon

Chemistry:

Numerical Chemistry (Objective book) for Physical Chemistry by P. Bahadur
Latest edition of Arihant Organic Chemistry for additional practice as it includes questions based on existing JEE pattern
S.N Sanyal's Organic Chemistry book, NCERTs for Inorganic chemistry and Paula Bruice for Organic

Mathematics:

Coordinate Geometry and Trigonometry book by S.L. Loney
A DasGupta's book for subjective and objective practice
For Calculus, refer to a book by G N Berman
Arihant Books, Cengage, Algebra "? Hall and Knight, Calculus "? Thomas and Finney