What are some fun things to do? I haven't been to Boston since I was a child, now that I'm an adult- what restaurants, museums, and sights should I see?

Welcome back!
Things have changed a lot and the seaport area is the happening spot.

Thank you for the warm welcome and I'll be checking it out for sure! I heard North End is great as well?

especially for food. Back Bay has some phenomenal restaurants and the Fenway area is fun. Newbury St. is full of good places to eat and shops galore. Enjoy and come back often to explore!

I'll be staying for a while but definitely excited to explore thank you for the wonderful suggestions!

It's really easy  but intimidating if you're not T savvy