Apparently books of short stories don't sell, so they skipped the second book of stories and went straight to the start of the novels. The problem with that is that the short stories, as well as setting the scene are more "Witcher" stories about the daily life of a witcher killing monsters and spins on well known fairytales. The novels with their longer story arc is less about Geralt, and more about other things (no spoilers).
If you can't wait years for more translations and don't speak Polish or Spanish, there are some decent fan translations of the other books.
If you can't wait years for more translations and don't speak Polish or Spanish, there are some decent fan translations of the other books.