[RobertKerans]

High Rise is possibly his most readable. The Elements series (The Drowned World, The Crystal World, The Drought and The Wind From Nowhere) is very good, Drowned World being the best, IMO. Unlimited Dream Company is well worth reading, as is Crash. His short stories are generally excellent, and maybe the best intro: Vermilion Sands is brilliant, but the best value is the (two volume) Complete Short Stories collection.

Empire of the Sun is pretty much essential if you want to understand why he wrote the way he did; why his characters are drawn and act the way they do. There's also a short essay he did for the Guardian a few years before he died, on modernism and death, which is informative (http://www.theguardian.com/artanddesign/2006/mar/20/architec...).

Also, this site is good: http://www.ballardian.com/