I'd personally look at the neuromancer by william gibson, its lighter then most to read and i personally quite enjoyed it, if you like his style you can also look at count zero and mona lisa smile which are also very good + the burning chrome series, basically a load of his short works that are nice easy reads.
If you after some seriously heavy reading look at the otherland series by tad williams, its 4 books at roughly 900-1000 pages each last time.