Hello, for the BMM Entance test for St. Xavier's it would be wise to read 'the Hindu' daily for latest updates as well as current affairs. You can purchase a copy of the verbal and non verbal reasoning by rs agrawal for the aptitude reasoning section. You can also refer to online YouTube videos for reasoning and data interpretation. The manorama yearbook can also prove useful. Other popular study guides can also prove useful as per the requirement of each section of the paper.