Encoding and Character Sets

All About Encoding and Character Sets

An understanding of character sets and Unicode
http://www.joelonsoftware.com/articles/Unicode.html
http://www.cl.cam.ac.uk/~mgk25/unicode.html
Right MIME types Apache 
http://www.ibm.com/developerworks/xml/library/x-tipapachexhtml/index.html
http://www.sttmedia.com/unicode-byteordermark
Character Sets
http://www.iana.org/assignments/character-sets/character-sets.xml
Unicode Charts
http://www.unicode.org/charts/
http://www.ssec.wisc.edu/~tomw/java/unicode.html
ASCII Charts
http://www.asciitable.com