How does one get an annulment?

There is no quick answer. You need to consult with an attorney by making an appointment and going over the facts.

Is a Restaurant's Operation Infringing on My Right to Enjoy My Residence?

You should seek regulation of their operation by addressing city/town regulatory authorities.

Can I evict my gf who isnt anywhere on my lease and pays zero rent? What am i required to do?

This is tricky. You really need to consult with an attorney and come up with a plan.

Do I have to pay an extra month of rent if I'm giving a notice to vacate and won't be using the apartment that extra month?

The law states at least one month's advance notice. When you think about it, it is fair to both sides.

Can I get a emergency custody order?

You need to file a motion for change or modification. It will have to be put on the calendar and heard in front of a judge. I doubt unless there's...

How do i do this ?

You need to call your town's building inspector. You also need to pay your rent. Talk to your landlord to see if both goals can be accomplished...

How can a parent give temporary custody/placement to a grandparent?

Consult with an attorney. Get all interested parties to consent.

My best advice is to try to work with your neighbor and the landlord to see if you can make everybody happy. If noise is a problem, address that...

Get the police involved if appropriate. Or obviously move.

What would prohibit an equity buyout of a sibling of a home ?

Call an attorney to help you. All legal situations have a resolution.