I want prepare my exam. Kindly guide me.

There are many tutorials and books on this subject online, and at libraries and book stores, but I think the best guidance for study comes from your own course work teachers, and the books they recommend on your reading lists. If they have not recommended any as part of your course work, you should certainly ask them, as this is the best way to learn what they are trying to empress upon you to pass the test THEY will give you.

What year are you in your schooling? How are you doing so far? Online or in class? Small details but VERY important ones.