Hello aspirant,
I am here for helping you...
For the preparation of IIT JAM and GATE examination you will have to bind a knot of yourself where you will take a pledge to study with determination and will always possesses a consistency, the best tip which you can get from all people is that try to complete your syllabus within 6 to 7 month and rest of the time you should give for the revision and for solving mock test and previous year question papers.
For the preparation of IIT JAM if you want to know preparation strategy then you can refer below link:
https://university.careers360.com/articles/how-prepare-for-jam
for the preparation of GATE if you want to know preparation strategy then you can refer below link:
https://engineering.careers360.com/articles/how-to-prepare-for-gate
I hope it will be beneficial for you....
For more queries you can  upvote my answer and can ask in the comment section below...

Best of luck...

the questions will be asked in three different patterns such as Multiple Choice Questions (MCQ), Multiple Select Questions (MSQ), and Numerical Answer Type Questions (NAT) in two sitting with 7 paper.

The syllabus of the exam will be divided as per the subjects & sections. It will comprise of following subject’s topics & chapters, i.e. Biotechnology (BT), Biological Sciences (BL), Chemistry (CY), Geology (GC), Mathematics (MA), Mathematical Statistics (MS) & Physics

Candidates preparing for GATE 2020 must be looking for some effective strategy and planning for preparation. To guide you out in this regards we have listed some effective preparation tips for aspirants:

• First of all, make up your mind whether you want to opt for a coaching class or would you prepare for the exam on your own.
• If you can afford and have the time to join coaching then go for it, but if you can’t then don’t worry you have a number of sources to guide you out.
• Coaching going aspirants get a schedule from their respective institute which they can follow however with a little more determination and dedication self-study can also get you qualifying marks.
• Self-studying aspirants must start by going through the GATE Syllabus
• Get a study material of any renowned author as a reference base.
• Start by revising the fundamentals of each chapter.
• For revising, fundamentals aspirants must use the standard book that they referred to during graduation for the respective subject.
• Start solving previous year GATE question papers as soon as you complete a respective topic.
• Solve topic-wise mock on a weekly basis
• Note down your mistakes in mock and work on those areas.
• Keep out a day every week for revision.
• Revision is to be done on a daily basis as well.
• Assess your performance in the mocks and find out weak and strong areas.
• Watch online videos and tutorials available on Youtube for clearing concepts.
• Practice is only thing which can make you successful
• Careers360 is conducting the All India Talent search exam where students of 11th and 12th PCM/PCB can test their knowledge and enhance their preparation by knowing their stronger and weaker areas and win prizes and scholarships worth ₹1.25 Crore.
• If you are an Engineering or medical aspirant, it is a great opportunity for you. Take the test, perform the best, avail the scholarship and win prizes.
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• Thank you

Hi rehman

thanks for asking your query ,for the preparation of iit jee you have to join a good jee coaching centre from there you would get study materials and necessary guidence you should follow ncert books because many questions are asked from there .For gate also coaching is required and engineering notes are required for the respective branches .You should thoroughly follow the current syallabus of gate and iit jee.

thankyou

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