If you are seeing Delhi on your own then using the Delhi metro is a must .The metro lines cover the major part of the city allowing far hassel free travel . More lines will be added over the next three month to improve coverage of the city.All signs and announcements are in hindi and english both . When you go and buy a token you have to specify the final destination. Remember to hold on to your tokenas it is needed to exit the station at the and of your journeyYou can avail a one day ( Rs 100) or three days ( Rs 250) tourist card which allow for unlimited travel . When you dont know where is station you check on Google GPS or a Delhi metro website.The first compartmenr is fixed for women only . During rush hour the compartments gets extremely crowded but train frequancy is still very goodSo . my experiance is very good and I suggested you try Delhi metro