The game's site has been putting up these really nice countdown videos where Kirino-san gives the viewers a tour on key locations from Chiba that were seen in the anime. Pretty interesting and funny
Video 1:
http://www.youtube.com/watch?v=_DZITJa4c44
Video 2:
http://www.youtube.com/watch?v=qxipyZ9lWVk
Video 3:
http://www.youtube.com/watch?v=z6OIkWGpSB4