Book the uber cabs, first open your app, set the destination.so simple.My father himself was not confident enough to use it at frist.After booking3-4 times himself he got so used to it that now wherever he goes, he’ll book a uber cabs himself now. If you take normal yellow or black cabs nd take uber cabs to go the fare difference isn’t much.At this time it is cheaper then black nd yellow cabs.when u paying almost the same amount, why not travel in an air-conditioned cabs.Every thing is computerized billing, payments, etc so u have to pay service tax at any cost.