Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Ruby negi
dear go through kelpener book of classical mechanics. this is best book for mechanics... you will get all your answers in it... best regards.. feel free to ask .