I read all the book (if i remember well 6). Play the three games. The series it seem very crapy to a fan. The actor dont suit well gerald, triss mery look like a character of another serie. and jenifer had face good girl when actually she isnt and dont look it. The effect of mutation of gerald are half way to the book. The only think remarkable its will based in first book (i love it) and the stories there are the beat. Maybe if you dont read the book you can enjoy better the serie than I will do.
I like, I was kind of afraid Henry Cavil being a very polished actor he wouldn't be able to catch how rough Geralt is, the new trailer definitely disproves that (also hnngg at using the same quote as one of the witcher game trailers)
Witcher 3 is its own stuff. Think most of the game stuff is based on the lore but its own chu k if Gearlts tail, I really wanna see it, kinda confused bout some character changing. Hope they don't water it down.