General

• The Pragmatic Bookshelf, a collection of programming books for many languages: http://pragprog.com/

Python

• Free eBook "Think Python": http://www.greenteapress.com/thinkpython/thinkpython.html
• David's examples: http://nylug.org/ftp/dbristow (most of them require pygame)
• Stef's examples: Resources.StefExamples
• Hidden Features of Python: http://stackoverflow.com/questions/101268/hidden-features-of-python
• What’s New In Python 3.0: http://docs.python.org/release/3.0.1/whatsnew/3.0.html

Ruby & Ruby on Rails

• Download Ruby: http://www.ruby-lang.org/en/downloads/
• Rails main site: http://rubyonrails.org/
• RubyGems main site: http://rubygems.org/
• Learn to Program (Book/Free Tutorial): http://pine.fm/LearnToProgram/
• Estate of why the lucky stiff (collection of why's Ruby programs and libraries): http://viewsourcecode.org/why/

Smalltalk

• Pharo Smalltalk environment: http://www.pharo.org
• Seaside Smalltalk environment: http://www.seaside.st (One-Click-Experience for easy installation: http://www.seaside.st/download/pharo#16819391)
• Customized Seaside (Smalltalk) image for the workshop: http://bit.ly/9HVpGo

Scheme

• How to Design Programs - An Introduction to Computing and Programming: http://www.htdp.org

Rockbox

• Rockbox project homepage: http://www.rockbox.org/

Operating Systems

• The Unix Haters Handbook: http://www.simson.net/ref/ugh.pdf

Regular Expressions

• The Regex Coach, a graphical application for Windows which can be used to experiment with regular expressions: http://www.weitz.de/regex-coach (Linux version discontinued, but it works with wine)
• Kiki, a Python/wxPython-based environment for testing regular expressions: http://code.google.com/p/kiki-re (Debian: sudo apt-get install kiki)

Fun Stuff

• http://www.slideshare.net/cog/chmod-x-chmod