First all book ho ho bus ,search in google for ho ho bus delhi,they charge 300₹ per person and u will visit all the places worth going.
Then if u want to visit famous markets like lajpat nagar central market,
Sarojini nagar market,
Delhi haat INA
Janpath,
Banjara market gurgaon,
Katran market,Through metro search all the location through google and nearest metro station from your location to the destination you are going.