Will My Prior time be credited for my current sentence

I do not think so. I think your prior weekends were served for the DWI and not for the violation.

No. A person can only be tried for a felony if he is indicted by a Grand Jury or agrees and consents to be prosecuted by a Superior Court...

What should I do

Probably nothing if you go in ASAP. Probation will look at your history and listen to your excuse and probably will not seek to violate you.

Is there a way to get around paying for probation if you have very little income?

I never heard of probation charging fees. Speak to your lawyer and if that is correct, have him petition the court for relief.

Do I plea guilty or non-guilty?

Plead not guilty and get a lawyer. You are not an accomplice and have no legal duty to turn your friend in or make him stop.

Since you are on probation, the probation officer is the one to ask.

How do I know I sold alcohol to a minor for sure

You do not. Why did your boss tell you?

How long will it takes for your case to be finish I've been waiting for 2 years and 2 months

The Courts in the Bronx are terribly backlogged with undue delays. Speak with your lawyer as to the possibility of moving to dismiss.

Do I deserve assault 3

I believe you have a self defense issue, but the injury described does not amount to assault 3rd.

What outcome(s) can I expect from a petit larceny charge?

Assuming this happened in the Buffalo area, you may still be able to get the case dismissed or an ACD by hiring a good lawyer and taking a...