If you want to buy book in Taipei. You can try walk around the Chongcing S. road
(Sec. 1, Chongcing S. Rd., Jhongjheng Dist., Taipei City 100, Taiwan). There are many kinds of books store such like computers, chinese literature and so on. If you want to some old book, you can find in 台灣商務圖書館

(in this photo http://www.streetimage.tw/media/streetimage/processed/14/2007_01_02_14_23_32_C/159.jpg ).

If you are computer geek, you can find various books in tenlong computer book store-天瓏書局

(in this photo http://www.streetimage.tw/media/streetimage/processed/14/2007_01_02_14_23_32_C/253.jpg ).

The gps log:osm.org/user/StreetImage/traces/589860
Video of the book road:http://www.streetimage.tw/imagecity/iframe?browseType=queryByTrailID&query=/media/streetimage/processed/14/2007_01_02_14_23_32_C