Rights, renewals and security deposits

[MG1923]

I've lived, for 10 years, in an nonregulated, 4 family browstone in Brooklyn. I am aware that I am not protected by stabilization laws that limit rent increases and that my rent can be increased to any amount.
But is every law in every area that pertains to stabilized apartment dwellers not applicable to non-stabilized apartment dwellers?
Two of many questions I have are:
1)If my landlord plans to increase my rent with next renewal lease, must he give me advance notice of the amount and how much notice must he give? If he does not provide sufficient notice, at what point does the new rent become effective?
2)Regarding security deposits:My understanding is that, regardless of stabilization status, a landlord cannot intermingle tenant security deposits with his own money.How can I obtain proof as to whether the landlord has or has not done so, as well as proof as to whether the landlord has voluntarily placed the deposit in an interest-bearing account, thereby entitling me to the interest?
Thanks for any info.