The Ikebukuro station can be arrived at from several of the subway lines in Tokyo. The Marunouchi, Yurakucho, JR Yamanote and JR Saikyo lines all reach Ikebukuro. In order to use the subway you must find a teller, purchase a pass and then enter the subway station. Make sure to find the correct line and correct direction.
After you arrive at Ikebukuro station, use exit 41 if you are using Marunouchi or Yurakucho lines. If you arrived by JR Yamanote or JR Saikyo lines, use the south exit to depart the subway station and enter the street.
Walk in the direction of Meiji Dori street. It is a main, wide street.
Cross Meiji Dori at the nearest crosswalk.
Once you cross Meiji Dori, you should be able to see Junkudo. It is a 10-story building located at the intersection of four roads.