To get admission in MBBS course, you will have to give NEET and for that students with PCB (Physics,Chemistry, Biology) with 50% are mandatory to have.

Also, the application window opens in the month of Jan-Feb and exam helds in May. 

To know all about NEET, you can go through the below link -

https://medicine.careers360.com/articles/neet

And if you talk about its preparation then you can follow below tips -

Know the syllabus - The first thing which you need to know is the complete syllabus and accordingly prepare.

Important topics- Physics – Optics, Mechanics, Nuclear Physics, Thermodynamics, Chemistry – General Organic Chemistry, Mole Concept, Periodic Table, Coordination Chemistry, Chemical Bonding. Biology – Genetics, Ecology & Environment, Cell Biology, Morphology, Basics of Biotechnology, Reproduction, Physiology of Animals & Plants.

Good Study Material - The most important element to prepare for any exam is good study materials as better to choose the standard preparation material.

Create a time table as per your schedule - Get a calendar and a diary, set your priorities, set out long study hours. Take care of your health. Don’t sleep during study time.

Practice NEET sample papers and previous year’s question paper - All NEET aspirants should do practice on sample and previous years papers as these would be helping them to know the important questions.

Prepare notes - The best way to improve memory skills is to prepare notes while studying. Candidates should write down all the important notes in a copy or diary which can be useful for revision before the examination and save a lot of time for them.

Online mocks - It would be better if you complete your syllabus till December and keep Jan-Feb for your sample papers and previous year papers and once you are done with these, start doing online mocks because these will be showing you all your weak areas along with actual paper pattern and accordingly you can practice again and this will also teach you time management skill during exam.

Apart from all these, better to be confident and do not cram.

Books which you can refer -

Biology: 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.

Physics: 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.

Chemistry: 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.

You can get sample papers for your practice through below link -

NEET Sample Papers