Boston, what do I need to know?

[SoShallINever]

We are hoping to go to Boston next month. I've never been to the US before and I'm hoping that I just need an ESTA rather than a full VISA?
What areas are good to stay in? And what tours or attractions are must see's?
Thank you for any advice.

The JFK museum is well worth a visit. It was recommended to us and we didn't expect much but really enjoyed it.

@Fluffycloudsfloatinginthesky
I can also recommend Mamma Maria and Trattoria Il Pannino if you're looking for more options (I could quite happily eat every meal in the Italian restaurants of North End!)

@BackToWhereItAllBegan

Thanks. I will make a note of those. We will be trying to keep food costs down so limiting full sit down meals. I have booked Turners seafood in Salem which looks pricey but nice.