nagytow: What do you mean by 'the first two books'? There's seven altogether, two containing short stories and five describing a story called The Witcher Saga. If you've got two out of five then you're got going to be too happy about not knowing the rest ;)
There are only two books so far in the English market (and, I expect, the general European one since generally it's the English market that drives the rest), those books are The Last Wish and Blood of Elves, which are namely the first short story book and the first of the five novels. There's talk about Times of Contempt being released soon, but nothing seems to be set in stone. The rest of the books seem to only be available in polish, sadly.
I personally read The Last Wish and, though generally a nice book, I found the framing story got in the way more often than it did anything from the novel and some of the stories were a little too stuffed with unneeded details. Some of the other stories are amazing though, so it's not like it's a bad book. I wrote a review on it for my site if anyone's else is interested:
http://www.tizzysart.com/en/book-review/the-last-wish/
Also, this won't spoil the game at all ;)
