how could prepare for second year

Hii Laki!
You haven't mentioned the details about the stream for which you asked the question. It would be better if you restructure your question and ask agin including the necessary details. The general preparation tips for any examination is -
* Know your syllabus well and make a timetable and follow it strictly.
* Make small notes while studying
* Practice as many problems and questions as you can related to the subject and topic.
* Focus on your weak points.
* Clear doubts regularly
Take care of your health....the most important thing.
Hope this helps.
Good luck!