http://www.alanwood.net/unicode/fontsbyrange.html
An excellent place to find a font capable of displaying a particular range of Unicode characters.
http://www.alanwood.net/unicode
Great information about using Unicode on the Web.
http://www-106.ibm.com/developerworks/library/codepages.html
An informative but digestible overview of the evolution of character encoding.
http://www.cs.tut.fi/~jkorpela/chars.html
A highly informative collection of articles on the basics of character representation in computers. By Jukka Korpela.