My starting point was Hogfather. It was a truly magical introduction to the Disc, and death's ending monologue is one of my favorite pieces of prose.
That said, the Wyrd Sisters is another great starting point.
The Terry Pratchett Estate (@PratchettOnline) on X
GIVEAWAY 📚 In honour of #TerryPratchettDay, we're giving away Discworld books. Which ones? In the spirit of 'starting in the wrong place', we'll pick some of your recs for the best place to start. To enter, share this post and follow @PratchettOnline. Winners picked 1 May.