The Wheel of Time in the order Robert Jordan wrote it. Beginning with The Eye of the World in 1990, the series ran for fourteen main novels over more than two decades, completed by Brandon Sanderson after Jordan's death in 2007. New Spring, the prequel novella, was published in 2004 between books ten and eleven but is listed last in publication order since it was written after the main series was well underway. Publication order is how most readers first experienced the series and how Jordan built the world - each book assumes familiarity with everything that came before.
The main series from The Eye of the World through A Memory of Light, with New Spring placed between The Path of Daggers and Winter's Heart. This is where New Spring fits most naturally - it covers Moiraine and Lan's backstory, and reading it at this point gives that history additional weight as both characters take on greater significance in the books that follow. Readers who have made it to book eight know the characters well enough to appreciate the prequel's events, and the emotional payoff of Moiraine's return in Towers of Midnight lands harder with her origin story fresh in mind.
