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The INTERCAL Programming Language Revised Reference Manual (Donald R. Woods and James M. Lyon)
The SMALL Programming Language Algae Programming Language (K.Scott Hunziker)
C++ vs Java vs Python vs Ruby : A First Impression  
Teach Yourself SQL in 21 Days [Mirror] Programming Language Examples Alike Cookbook (PLEAC)
Teach Yourself CORBA In 14 Days [Mirror] [Mirror] [Mirror] [Mirror] [Mirror] [PDF]
Mason Developer's Manual Pascal Programming (Brian Brown/Peter Henry)
Free Online Smalltalk Books Pascal Language Tutorial
A Gentle Introduction to ML Mastering Regular Expressions, 2nd Ed.
Thinking Forth (Leo Brodie) Programming Forth (PDF)
Programming in Lua The Z Notation: a Reference Manual (J. M. Spivey)
Job Control Language (JCL) Introduction Introduction to JCL Objectives
Thinking in PostScript (by Glenn Reid) [Homepage] PostScript Language: Tutorial and Cookbook