C++

Arrangement Library
Generating Random Numbers
Sound and Color in Console Programs [pdf][[doc][htm]

Excel

Boxplots

HTML

Primer, Quick Reference, FAQ, user-input

JavaScript

Official Documentation, Getting Started, FAQ, Arrays, Regular Expressions, Strings, user-input

Programming Contests

Problem archive for Carthage's ACM regional contests:
    http://www.carthage.edu/ewheeler/acm_contest

A great contest practice site
   http://online-judge.uva.es/problemset/

Visual C++

Visual C++ Project Makers, Getting Started in Visual C++

Word

Mathematical Typesetting

Miscellany

DOS:  QuickStart    Primer
So You Want To Program Games?
Dictionary Word Lists Small and Large
Swapping with XOR