The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About Unicode and Character Sets (No Excuses!) is an article of sheer simplicity and feeds in consummate understanding of the character-set world. Written by Joel Spolsky, a software developer and an owner of the company, Fog Creek Software, which makes CityDesk, a site publishing software.
If you have no clue of Unicode this is where you peep first. Recommended reading for all who are curious to know about this Unicode funda.
Link via Kingsley.