Scheme

• The Scheme Programming Language
• DrScheme home page
• DrScheme tour and reference manual
• An Introduction to Scheme and its Implementation
• An introductory programming book based on Scheme
• Schemers.org

Java

• The Java Language Specification
• The Java Tutorial
• Thinking in Java
• Java API
• Java API (local cache)

Prolog

• Adventure in Prolog
• Prolog and Logic Programming Tutorial
• SWI Prolog