For more detailed directions on leaving Tokyo's Narita airport via train, through to arriving in Hakuba (includes bus timetables from Nagano station), please refer to the downloadable pdf

For train time tables through out Japan go here Hyperdia Rail timetables 

To book trains out of  Narita, through Tokyo, go to JR East website

For bus time tables from Nagano station to Hakuba, go here

From Tokyo (Narita) airport
Narita Express (NEX) -  Tokyo Station - Nagano Shinkansen(Bullet Train) - Nagano Station - direct bus service to Hakuba Station

From Tokyo

Shinjuku Station - Chuo Line / Matsumoto Station - Oito Line - Kamishiro Station

or

Tokyo Station - Nagano Shinkansen(Bullet Train) - Nagano Station - direct bus service to Hakuba Station

From Nagoya
Nagoya Station - Chuohonsen Line - Matsumoto Station - Oito Line - Hakuba Station

From Osaka
Shin-osaka Station - Tokaido Shinkansen(Bullet Train) - Nagoya Station - Chuohonsen Line - Matsumoto Station - Oito Line - Hakuba Station

From Hokuriku region
Kanazawa Station - Hokurikuhonsen Line - Toyama Station - Hokurikuhonsen Line - Itoigawa Station - Oito Line - Hakuba Station

A courtesy Double Black vehicle will be sent to collect you from the station. Please confirm arrival times in advance to ensure a speedy pick up.