Enquiry bus from Harbin to Yabuli

Hi,

I am wondered, there are 2 transportations from Harbin city to YBL Ski Resort which are the bus and train.

1) Where can I take the bus from Harbin City to the ski resort direct? Which company bus, time and fare pp?
2) From which harbin railway to which YBL railway should I take if i use the train?
3) Is there any time table for the bus between Harbin city to YBL and vice versa?
4) Do i need to book in advance since it is a high peak season for transporation?

Hope to hear from you.

Many Thanks
Andrew