hello,

Prepare your subject from the books and solve questions as many as available in example and excercise section. On the part of previous year question paper it depends if your state board has uploaded it or not. You can browse for it in google. if you get it then it is your  good luck. But even you get paper you have to solve it by the end of the day. for that your basic  concepts have to be clear. so study everything while understanding them. If you don't understand and keep on memorize you will forget and the only solution to it practice. You have books and it is enough to get your concepts strong.

Hope it helps!