[DoubleDealDecker]

'The Chronicles of Thomas Covenant the Unbeliever' Stephen Donaldson. Just start reading it, it is to hard to describe.
'The Foundation'. This series by Isaac Asimov will hook you from the first page. IMHO the finest SF of all times.
The 'Earthsea' novels by Ursula Le Guin. Even though this is radical lesbo pinko writing, it is still good stuff.