I'm a huge fan of Sarah J. Maas, and if you're diving into her books, I'd recommend starting with 'Throne of Glass'. It's her debut series, and it sets the tone for her writing style—epic world-building, fierce heroines, and slow-burn romances. After 'Throne of Glass', move on to 'A Court of Thorns and Roses' (ACOTAR). This series has more mature themes and a different vibe, but it's just as addictive. Finally, check out 'Crescent City'. It's her newest series, and it blends fantasy with urban elements. Reading them in this order lets you see how her writing evolves, which is super satisfying.
If you're into audiobooks, the narrators for these series are fantastic, especially for ACOTAR. The way the stories unfold, you'll get hooked on the characters and the intricate plots. Plus, there are subtle connections between the series that make rereading them even more fun. Trust me, once you start, you won’t want to stop.