I bought the witcher 3 during the steam summer sale and have not gotten around to playing it yet, so i got spoilt on three things, I know in one ending ciri and geralt die, another ending where ciri becomes evil (that's all i know) and the main ending where ciri becomes a witcher and geralt gets married to yen. Also i know ciri's biological father is the bad guy, not sure if thats a spoiler? 

Now, i dont even know any of these character's as i have never played a witcher game before, this is all i know, has this game still worth playing do you guys think? And if so how much will what i know ruin the story as a whole? I was really mad and upset that such a amazing game was spoiled for me. 

​I did not find the right solution from the internet.