I thought I would write a bit about the books, because I've always read mixed things about them and I went in with low expectations - and although that was ultimately pretty accurate, they're still absolutely worth reading!
The books and the show are good in different ways. Having watched the show first, the novels almost felt like fanfic! But I mean that in the best way possible: you get to see your favorite characters go through familiar events in different ways and hearing their inner thoughts, and in some cases they have totally new adventures. I watched the show during an emotional time during covid, so reading the books felt almost nostalgic and there were a lot of warm moments. That is especially true since the ending of season 4 in the show does not happen in the book, so the plot diverges a lot after that.
No real spoilers ahead but I talk about how characters and scenes compare to the show, without going into detail.
First, Quentin is a jerk and often misogynistic for almost all of book 1. He grows up by going through things personally and by empathizing with others as they go through things. It really isn't until book 2 that he's a good person. It really is worth pushing through, though, especially because...
Alice is a way more interesting character, and there are really sweet moments between her and Quentin. She was never my favorite in the tv show and I think both she and their relationship together are better represented in the books. I wouldn't necessarily recommend the books for the romance specifically, because it's not in focus most of the time, but it is really nice to have it alongside the main events.
Julia's origin story is overall much better in the books than the show, though I appreciated some of the later things in the show. She really goes through a lot in the books and really struggles in a way that the show doesn't go as into depth on. The lore and mythos for hedge witches is explored in a much more interesting and meaningful way.
Penny's arc and his character in the show is way better. He basically is almost a plot device in the books moreso than a true standalone character. Honestly, kind of disappointing. You can somewhat say the same about Josh, though he has some good scenes.
Eliot is just okay in the books, though he has a couple of nice moments. And we never get to see anything as deep as peaches and plums, sadly.
Janet... oh my gosh Janet is such a worse character in the books. :( Even putting aside that she absolutely shines in the show, in the books she basically just exists to be snarky and snide. Other than the desert scenes, she's almost entirely forgettable. Really sad about that.
Other stuff: there are a lot of things the tv show did better than the books. Season 3 of the show especially was far and away better than anything the books did with the golden keys, and a lot of the lore about fairies, the gods, the underworld, Jane Chatwin's experiments, the mirrors, etc. was much more interesting in the show.
With that said, the books did have their moments, we get to see more of Ember and Umber, the Chatwin children's backstories are interesting (especially Martin's motivations), and we get to see a bit more of the dragons.
And finally every so often you get really nice explanations like this one, which ultimately you can take back and use to enjoy the show more upon a rewatch:
It was funny about magic, how messy and imperfect it was. When people said something worked like magic they meant that it cost nothing and did exactly what you wanted it to. But there were lots of things magic couldnât do. It couldnât raise the dead. It couldnât make you happy. It couldnât make you good-looking. And even with the things it could do, it didnât always do them right. And it always, always cost something.
And it was inefficient. The system was never airtight, it always leaked. Magic was always throwing off extra energy, wasting it in the form of sound, and heat, and light, and wind. It was always buzzing and singing and glowing and sparking to no particular purpose. Magic was decidedly imperfect. But the really funny thing, she thought, was that if it were perfect, it wouldnât be so beautiful.
Overall I'd say it's a 7.5/10 where the tv show is a 10/10, but if you miss the characters it's worth reading. You'll be glad you did. :)