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)
Rucha rajesh shingvekar
For that book is better option for you. otherwise you have to search every topic on Google. In book you will get everything and most important you will get hard copy. If I get any PDF mcq file I will upload it.