Hello Anshu,

Best books and tips for preparation of Msc Zoology BHU are-

• Zoology A Complete Guide by Anita Sehgal
• M.Sc. Zoology Entrance Examinationby A Sehgal
• TRB Zoology (PG) Previous Years Model Solved Papers 2017 by S. Devi Parthiban
• Leininger for immunology

The best way to prepare is to be thorough with your basics and keep on revising the topics which you think are tough. Follow a timetable, giving equal time to each and every topic and don't stress yourself.

Goodluck

Thank you