Can you tell me what kind of books that story about virtual librarian?

I didn't quite understand the question but if you are interested in books that tell about virtual libraries and their development in general you might want to check books conserning library science (called "kirjastotiede" in finnish). For example these books tell about the subject:
- Borgman, Christine L.: From Gutenberg to the Global Information Infrastructure. 2000.
- Laverna M. Saunders (ed.): The Evolving Virtual Library. 1999.
- William Y. Arms: Digital Libraries. 2000.

Virtuaalikirjasto, finnish virtual library, can be found in the Internet http://www.jyu.fi/library/virtuaalikirjasto/engvirli.htm . There is also some general information about virtual libraries (see "Help" and "General instructions"). Other virtual libraries can be found in the Internet for example by using a search engine (for example http://www.google.com/ ). Use key words like "virtual library", "digital library" or "electronic library". Some sort of list of virtual libraries can also be found on http://www.kirjastot.fi/linkkikirjasto/haku.asp .