First Poirot I’ve read. I used Audible to read along with the book. The voice actor who does the Uk version is the actor who played Hastings in a long running TV series adaptation with David Suchet playing Poirot so it was quite fun to listen to.
I want to complete the Poirot series and read more from Agatha Christie and this has been a good start.

Lots of mystery, a few twists and revelations. Good introduction to Poirot.