Sites
http://talks.php.net/show/scripting-v2

http://www.perl.com/

http://www.python.org/

http://www.php.net/

Books
http://www.amazon.com/exec/obidos/ASIN/0596001320/

http://www.amazon.com/exec/obidos/ASIN/1565922433/

http://www.amazon.com/exec/obidos/ASIN/0596000278/

http://www.amazon.com/exec/obidos/ASIN/1565924649/

http://www.amazon.com/exec/obidos/ASIN/0596000855/

http://www.amazon.com/exec/obidos/ASIN/0672317842/

http://www.amazon.com/exec/obidos/ASIN/0672323257/

http://www.amazon.com/exec/obidos/ASIN/1565926102/