My first introduction to this book was through Michael Radford's wonderful commemorative telefilm adaptation which absorbed and scared me (fantastic performances by John Hurt as Winston and Richard Burton as O' Brien) . I then read the book to find a genuinely affecting narrative. Winston is a very personable protagonist and even though you have inkling of the darkness of his fate, there is still that sense of shock and tragedy when he actually meets with it. The ending was wonderful...it gave the impression of an even more brutal and frightening establishment than previously denoted.
Anyway if you want to read more Orwell there is little you can go wrong with. I've read almost all his novels, except Clergyman's daughter and all of them are nothing short of excellent and many truly transcendental.
Like I had in another thread I heartily recommend:
Coming up for air
Keep the apsidistra flying
Burmese days
His essay collection, Inside the Whale, is also highly recommended...or you could hunt down a 4-volume set of his complete essays and letters. Orwell's a genius and I haven't so far read anything by him that doesn't radiate with intelligence and passion. Like one of my friends said to me he could write about a topic you had no interest in and make you feel interested in what he had to say about it.