Just watch the Netflix show or play the games. I'm not sure if it's just the translation or what, but it's difficult to take a stoic fantasy protagonist seriously who says "what the heck." The stories and writing style are flat and boring. I think the author was trying to make some interesting commentary about the world's perception of powerful women, but it never fully got there for me. I came out of this with hardly any understanding of Geralt (and I honestly can't say for sure if what I do know is only because of the aforementioned adaptations).