I found a few orders to read the books in on Reddit and chose to go with the chronological order. I’m currently on foundation and so far its worked pretty well. There were a few other orders that had their own benefits so might be worth a duck duck go. But here is the chronological order:

1. I, Robot [ROBOTS]
2. The Caves of Steel [ROBOTS]
3. The Naked Sun [ROBOTS]
4. Mirror Image (short story) [ROBOTS]
5. The Robots of Dawn [ROBOTS]
6. Robots and Empire [ROBOTS]
7. The Stars, Like Dust-- [EMPIRE]
8. The Currents of Space [EMPIRE]
9. Pebble in the Sky [EMPIRE]
10. Foundation [FOUNDATION]
11. Foundation and Empire [FOUNDATION
12. Second Foundation [FOUNDATION]
13. Foundation’s Edge [FOUNDATION]
14. Foundation and Earth [FOUNDATION]
15. Prelude to Foundation [FOUNDATION]
16. Forward the Foundation [FOUNDATION]