Question

how can I study for exams

Answer 1

You have just do a thing that have trust in you and study hard

Answer 2

heya

first of all switch of ur mobile 
do meditation to boost ur memory and concentration
power naps are really important
eat good food like green vegetables to stay fresh and active
listen soft music
give gap for every half an hour while u study
whtever u study learn carefully 
fix the goal lessons to be completed

these r the things that i follow while i prepare for my exams

hope these helps u