NCERT is the best book for NEET preparation so if you are in class 9th then firstly go with NCERT books for the preparation then prefer the other books. Here is a list of books to refer for NEET Medical entrance exam :

Best Biology Books for NEET Preparation:

• NCERT Biology of Class XI and XII
• Trueman's Biology Vol 1 and 2
• Objective Biology by Dinesh
• Pradeep Publication's Biology
• GRB Bathla's Publication's for Biology

Best Physics Books for NEET Preparation:

• Concepts of Physics by H. C. Verma
• NCERT- Physics Part 1 and Part 2
• D C Pandey Objective Physics
• Fundamentals of Physics by Halliday, Resnick and Walker
• Problems in General Physics by I. E. Irodov

Best Chemistry Books for NEET Preparation:

• NCERT Chemistry
• Physical Chemistry by O.P. Tandon
• Organic Chemistry by Morrison and Boyd for Organic Chemistry
• Modern’s ABC of Chemistry for class 11th and 12th
• Concise Inorganic Chemistry by J. D. Lee for Inorganic Chemistry
• Dinesh Chemistry

Good Luck!