i want to ask whether any private tution is required for board exam of class 12 or shall i go only to my coaching centre , and how to prepare in 1 year and the book options

you prepare acadmic test books then you got good marks and well known concept . so no need not other books to prepare for 1st year . When you read test books you might lot of doubts so you clarify through your teacher.

First of all don''t waste your time and prepare Acedemic books each and every sentences you should try to understand.And also other materias..... you read.And you have self confidance.And take your health.