you just dont keep on studying.
just give some relief to your brain
whenever necessary.just reading
is not enough for a good rank.....
also learn keeping concentration
on what you read.understand what
you are reading.this also helps
you to get more knowledge.
also apply it in your daily life.
so that you will never forget what
you are reading.
hope this helps you.......pls mark as best if you satisify with my answer.