Who is this guy and whats his background?
Can't really add anything to what others have said. Viet Nam vet with scientific credentials and these things infuse his writing, which has won multiple awards.
Are his other books as readable as this?
Generally, yes. Haldeman is one of my favorite writers largely for the fact that he doesn't screw around. He's quite aware of literary values and/but he's mastered a direct, efficient style rather than a dense obtuse obscurantism and seems to be more inspired by the novel as a coherent form rather than the more 18th/19th century "and then" kind of chatty piling on of incidents. He's also written the occasional superb short story, novelette, novella.
Despite enjoying his style and most everything I've read by him, I'm not a Haldeman fanatic and haven't read everything, especially of the newer stuff, but I can recommend:
Collections:
Infinite Dreams (1978)
Dealing in Futures (1985)
None So Blind (1996)
A Separate War (2006)
In a way, each of these collections gets better than the one before it.
Novels:
The Forever War (1974)
Mindbridge (1976)
All My Sins Remembered (1977)
Worlds (1981)
Worlds Apart (1983)
Worlds Enough and Time (1992)
Camouflage (2004)
(AMSR is actually a collection of three connected novellas woven together with additional material. And the "Worlds" novels form a trilogy.)
The only one I can't entirely recommend is
Forever Peace (1997). It's still fairly well done and interesting in ways, but doesn't carry the weight of its questionable didacticism.
The Forever War probably is his best novel and does have a
much later sequel that I haven't read and is probably unnecessary but this, despite the title, has nothing to do with
The Forever War except the title and some thematic material - nothing in terms of plot and character.
I have wanted to try Haldeman ever since i was impressed by his short story None So Blind.
Yep, that's a good one.
Pyan and others who have read Forever War can i who enjoy reading thoughtprovoking Military SF take a chance on the book and buy it ?
Yes!