1. Register company (Proprietorship / LLP / Pvt Ltd, but best go with Prop. Because its process is easy and cheap)
2. Get shop establishment license from municipal corporation (easy to get)
3. Get PAN card on the basis of above documents on company name.
4. Open an current account of business
5. You will just need VAT as your products will be sold anywhere in country. Other things are only needed if your sale crosses certain limits, so that can be done later.
And find yourself a mentor who can suggest everything to the smallest detail, for example
what is organic sales in amazon
And then just register with companies you wish to sell and complete the documentation with them.
And after that upload your products and you are ready to go.
And please do tell us where you uploaded your products so that atleast I can order it.
And All the best for your new venture.