Getting around India

Here is a quick list of things to do in Kolkata:
1) To visit - https://traveltriangle.com/blog/best-things-to-do-in-kolkata/
2) To eat - https://traveltriangle.com/blog/kolkata-cuisine/
3) To shop - https://www.tripsavvy.com/best-shopping-in-kolkata-1539694
In terms of traveling around India, there are infinite options depending on what you want to see and how much time you have. For starters, we have listed a few options below:
1) North East India + Sunderbans (2 weeks)
https://www.transformingtravels.com/all-tours/
https://www.lonelyplanet.com/articles/planning-your-sundarbans-adventure0o0
2) Classic golden triangle (1 week)
https://www.lonelyplanet.com/india/rajasthan/planning/itineraries/a/nar/6602f03a-34aa-4187-97b0-b620f8b33bab/356446
3) South India (1 week)
https://www.lonelyplanet.com/india/south-india/planning/itineraries/a/nar/0f23e133-1055-40db-b0d1-1535d038d1a1/1333945
4) Mumbai + Goa (1 week)
https://www.lonelyplanet.com/india/goa