It's a good book, but depressing in it's lack of hope. Orwell was dying when he wrote it, and much of what he believed in had failed. Unlike many other socialists of the era, he saw that the great communist experiment of the USSR had led to a terrible dictatorship, and his forthright criticisms had led to him been somewhat frozen out by his fellow leftists. I kind of picked up a vibe of despair when I read the book, which saddens me as I rather admire Orwell and wish his passing had been a bit happier, if you see what I mean.
It's worth reading some of his other stuff, as well. I rather enjoy some of his journalistic writing such as Homage to Catalonia and Down and Out In Paris And London, with thier crisp style and dry wit.