Originally Posted by sun surfer
And Then There Were None is a great Christie to start with! And it's an all-time mystery classic. It's without a doubt, far and away, my favourite of the books I've read by her.
I'd agree completely that "And Then There Were None" is a great place to start - it's one of my two favourite Christies (along with "The Murder of Roger Ackroyd").
Having said that, you can't really go too far wrong with any of them - the language isn't difficult and they all have their merits.