There is no wrong way to walk Chandni Chowk, but there is certainly a right way. Starting from the Red Fort and ending at Fatehpuri Masjid, this guide outlines the complete 2.5 km route.
Ensure you visit the Jain temple right opposite the fort early in the morning, lose yourself in the chaotic aromas of Khari Baoli before noon, and wind down with a hearty plate in Paranthewali Gali. Wear comfortable shoes and bring an empty stomach.