IIT JAM is a national level examination organized to offer admission into M.Sc. (four semesters), M.Sc. Ph.D., and M.Sc. Ph.D. dual degree etc. programmes at IITs. The admission is offered to the Indian nationals as well as foreign national candidates. Students qualifying this entrance test can apply for admission into these courses in various renowned colleges of the country.

JAM is one of the toughest paper and therefore must be dealt with care.firstly aware yourself of the syllabus of the JAM, then Make a timetable and follow it religiously. Solve previous year questions to see your improvements.

Here is a link to some additional information:

https://www.google.com/amp/s/university.careers360.com/articles/how-prepare-for-jam/amp

Hope this helps. Thank you.