Series or Books?

[lebeast]

The books are amazing, but I am actually really glad that I watched the show before I read the first book. I will continue to watch the show, but it will just be different now because I know what happens.

[Enshou]

If you want to enjoy both, read the books first. I couldn't bring myself to read the first book after knowing the whole story.
Sure there's a lot more details but it's more fun if you don't know what to expect if reading.
Tv series are for the visual experience anyway, for me it is at least.