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)
Mayank vedwal Vedwal
For mineralogy go for Dexter Perkins and Earth material ....and to start palaeontology from basics use Nield & Tucker and after that go for Amal das gupta to make short notes of palaeontology.