This is like asking what to do/where to eat in NYC.

Bangkok is massive.

Tripadvisor is a good starting point ("Bangkok activities" or "tours")

Also Google "Bangkok scams" to know what to avoid.

Street food is the best and safe.

Family owned restaurants if you want a sit down place. Go where the locals go, not where the hotel concierge recommends.


Have fun - it is the best city in the world!