Min cut off required for NEET PG 2018 general category is 321.
Yes there will be 2nd round of counselling for NEET PG 2019. It will be conducted on 6th April, 2019 and 15th to 26th April, 2019 for the state.
Yes, there is a facility of both the Practice Test as well as the tutorial session. You are advised to try Practice Test on the NEET-PG official website. Further, you should also pay attention to the 15-minute tutorial shown to make you understand navigation and other controls. Read about the NEET 2018 here.