Taxation and Dropshipping rules for India


Can anyone share their own experience and inputs on dropshipping in India for Indian customers :

1. What shall be applicable income tax and GST rules if I residing in India start dropshipping for Indian customers ?
How to know if GST shall be applicable or not since products shall be directly shipped by supplier to customers in India.

2. In case of Free shipping will the suppliers ship the product directly to the mailing address of the customer at his doorstep ?