Being one of the toughest exams, one needs to have the best study materials to prepare for Neet. Generally Neet syllabus is based on CBSE. But we all know that there is hardly any difference between CBSE and other boards. If you are a bengali medium student, then you must have studied in your intermediate Santra Publications Books. Santra Publications Biology Book is very much informative and good enough to have a clear concept on all the matters. You must have read Maity Tewari's Physics, and Chemistry as Textbook. So you can start your preparation with that. You can also prepare from NCERTs. Usually experts prefer NCERTs over any other books. NCERTs are written in simple language full of information and sometimes few questions are directly asked from NCERTs. Whatever books you choose, your basic must be strong. Once done with the textbooks you can move on to standard reference books like try to solve Problems of HC Verma, for More Chemical Calculations you can rely on RC Mukherjee, Truman's Vol 1 and 2 for Biology is extremely good. First you should focus on completing your syllabus, then give mock tests regularly, and solve previous year papers also.