Series
The The Witcher series has 6 books.
Published between 1994 and 2013, in the same order they are meant to be read.
The Witcher is Andrzej Sapkowski's fantasy series about Geralt of Rivia, a monster hunter for hire. Start with the two story collections, The Last Wish and Sword of Destiny, which introduce Geralt, Yennefer and Ciri; the five-novel saga begins with Blood of Elves. Season of Storms is a later standalone set between the early stories.
All 6 books total 2,704 pages.
The Books Oracle — track the series you are partway through, and see what to read next.