Ebooks for all

Perl stuff

http://www.webdesigns1.com/perl/ir.html
http://www.ictp.trieste.it/texi/perl/perl_toc.html
http://www.itknowledge.com/tpj/
http://www.plover.com/~mjd/perl/

Java stuff

http://www.cs.brown.edu/courses/cs016/book/
http://polaris.cis.ksu.edu/~schmidt/CIS200/ http://www.daimi.au.dk/dProg1/java/langspec-1.0/index.html

Lisp stuff
http://www.cs.cmu.edu/afs/cs.cmu.edu/project/ai-repository/ai/html/cltl/mirrors.html
http://www.cs.tulane.edu/www/Villamil/lisp/