eBook for SQL server

is there any EBook for SQL server... pls give the Link

www.campus.ncl.ac.uk/databases/sqlser/refs.html

www.red-gate.com/about/news/ebook.htm

www.sqlmag.com/Article/ArticleID/48012/sql_server_48012.html

http://novian.web.ugm.ac.id/sql.php

hope this hlp u.