Start with A Court of Thorns and Roses, the 2015 first book. That sounds obvious until you spend ten minutes in any book community, where the standard advice is some version of "book one is fine, book two is where it actually starts" — and a surprising number of readers take that as permission to begin with the sequel. Do not. The second book exists to take the first one apart, and if you have not read the thing being dismantled, the reversal that made this series a phenomenon simply does not land.
So: publication order, books one through five, no chronological alternative to argue about, because the series is told in sequence and the only real complication is the fourth entry. Everything below is about that complication, about how dark the fifth book gets, and about where the reading order currently stops.
Start here: the bargain
A Court of Thorns and Roses is a fairly straight Beauty and the Beast retelling with a Tam Lin ending: a human huntress kills a faerie in the woods and is taken across the wall in payment. Most readers find it the slightest book in the series, and it is genuinely slower than what follows. Read it as setup, because that is what it is.
Court of Mist and Fury — our catalogue stores the title without its leading article; it was published as A Court of Mist and Fury — is the reason the series has the readership it has. It takes the ending of book one apart and rebuilds the entire premise, and it has to follow book one directly. Reading it alone means missing the reversal it exists to perform.
The war
A Court of Wings and Ruin is book three and the end of the trilogy as originally planned. It resolves the invasion plot and settles every court alliance the later books depend on, so if you want one clean stopping point, this is it. A reader who stops here has read a complete story.
After the war
A Court of Frost and Starlight is the entry people ask about. It is a short novella set over the Winter Solstice after the war, doing recovery rather than plot, and because some listings number it 4.1 rather than 4, readers assume it is optional. Read it in place, between the third and fifth books. It is where Nesta's storyline is set up, and skipping it makes the opening of the next book feel unearned. Treat it as an interlude rather than an instalment and its slightness stops being a complaint.
A Court of Silver Flames switches to Nesta as narrator and is much darker in subject — trauma, self-destruction and recovery, at around seven hundred pages. It is worth knowing that going in rather than discovering it on page fifty. It is also the latest book in the series: sequels have been announced but have not appeared, so this is where the reading order currently stops.
Where to stop, and what comes next
Two honest stopping points. Book three if you want the original trilogy and nothing else; book five if you want everything published so far, with the understanding that the story is not finished and there is no publication date to wait for.
Then the two questions every reader of this series asks next. Throne of Glass is Maas's first series, and it does not connect — a separate world, no crossover, nothing in either requires the other. Start there if you want more of the same author, but know that it is eight books long and warms up slowly; several of its early volumes are widely considered weaker than what comes later.
House of Earth and Blood is the first Crescent City book, and it is a different register entirely: urban fantasy with mobile phones and nightclubs rather than courts and estates. That series does eventually touch the others, which is the one real argument for order — read it after finishing ACOTAR, which is exactly where you now are.
The full path lays this out stage by stage with reading notes; Discover has related fantasy paths.
Follow the full ordered path here: A Court of Thorns and Roses Reading Order: Where to Start.