The first lesson-dont get tensed up
but be focused as your career depends on it
be ready to work hard
finish off your portion by january for your march boards
revise once everything one month before your board exams
do not start your final revision much early beacuse
then you may not remember it
during your exam make it a point to go through everything
just before the exam
because what you read before the exam is what you are most likely to remember and recollect in the exam
do not just read but say the things in your mind
saying loudly and fast also helps
saying it will help you write answers during your exams rather than reading your studies
work hard
best of luck