My name is ***** ***** I'm a New York State criminal lawyer.
In my experience, if this is your first contact with the criminal justice system the DA will offer to reduce the charge from a misdemeanor to a violation -- either disorderly conduct or trespass -- either of which would not be a crime if you wanted to plead guilty to the reduced offense. You'll have a sentence to complete: a fine, or community service, or anti-shoplifting classes, or a conditional discharge. But if you stay out of trouble the matter will seal in a year and not turn up on your record.
There is even a possibility, if you ask, that the DA might consider an adjournment in contemplation of dismissal. An ACD is a delayed dismissal. You don't have to plead guilty to the charge as it is a dismissal, but you do have to stay out of any further trouble with the law for 6 months, before the dismissal is sealed or it can reopen on you and you'll have to fight the case all over again.
Either way, if you wanted to resolve this case rather than go to trial, so long as you make your court appearances, you won't have to worry about jail, and you should be able to put this matter behind you, as I have said above, without ending up convicted of a crime.
Plead not guilty when you go to court at your arraignment and then if you don't have the money to retain a lawyer, ask the judge for a public defender and if he can't get you the ACD, he'll be able to get you the violation.