what is the way to prepare for jam exams?? using standard books or preparing through previous years question ???

Both are the important to prepare IIT JAM exam along with your study Practise with previous year paper will give you an idea about the exam. Here are some important tips you can follow.

Prepare in advance
If you are planning to take JAM IIT it is necessary for you plan ahead  as the JAM exam takes minimum 3-4 hours of study in a day. Since JAM  exam syllabus are based on graduation syllabus you can prepare easily  along with your academics.

2. Coaching institutes
Joining coaching institutes would be one more better option. The  coaching classes will focus on organised and structured way of teaching  and they also guide you in the right direction.

3. Follow the syllabus
The syllabus for the exam are announced by the organising institute in  advance. Thus, it is mandatory to go through with each and every topic  in order to excel in the exam.

4. Solve previous question papers
Solving old and mock question papers will sure lead you on the road to  success. Referring and solving old question papers also give an insight  into pattern of questions that can be expected in the exam. JAM question  papers are available in the bookstore and online as well.

5. Refer IIT JAM books
Various books on IIT JAM are available in the market and also online.  Referring to them while you are preparing will have an added advantage.
6. Basic computer skills
Since IIT JAM has a paper on computer applications it requires you to  focus on basic knowledge of computer and fundamentals of C language.

Good Luck!