New Hampshire ?

Heading to New Hampshire next week and I have a carry permit (Non-Resident) and about to use it for the first time.
From reading up it looks like the only off limits is "Court houses", private businesses with posted signs can ask you to leave but there is no law stating you can't walk in. If they ask you to leave then you have to leave.

Any feedback from anyone living in New Hampshire?, also going to carry for first time ever, any tips?

Thanks
Mike