I am searching for items such as: Park Manager Job Descriptions 
Park Rules and Regulations 
Notice for rule violations 
Notice for late payments 
Introduction letter from new park owner 
Instructions for rent/utility payments.

I use erentpayment.com for online rent payment and in my set-up, I have the payment breakdown in the rent reminder email notification that goes to all. 

If you can bring in homes  to fill the vacancy   , if market rents are 450 and you can charge back utilities to tenants over time, its def possible the deal can make sense and with those lot rents guessing its a good housing market.  

I’m sure you already know this, but don’t forget to take into account vacancy, repairs, capex, maintenance, utilities, etc etc.

Since posting my question, I have since signed up for the online class with moseley, and also talked with some people at different brokers.   

I am new landlord in New Brunswick, NJ, I rent 3 bedroom townhouse to the section 8 home. the tenants need pay all utilities. the water in the bathroom were bleaking she find out untill the water bill came, the water bill is very highabout $2,300.00 for the 4 and half months. she don't want pay any, I aske her pay $ 400 and I paid the rest. she said he will take care of it but never do. now she live there a year, she only pay $200 for the water. the open balance is $438.00. what should I do. do I need to go to court?

Search what the cuts should be online to get a better idea. 

I spent 30+ years in Washington State and have had some involvement with DSHS (although not with housing).My advice to you: 1) Everything the state does takes three times as long as it should and three times as much paperwork as it should.  2)  You will probably have to attend some indoctrination -- I mean class -- either on-line or in person.  3) Your tenant will be endlessly "educated" on their rights and will have free legal representation. 4 ) Just when you think you know the rules and try to play by them, an administrator will come up with an "ETR" -- Exception to Rule. 

IE there is no customer service department.. title plants are not on line and just a click away like they are on the west coast... etc etc.would help if you actually described what it is you want them to do for you that you consider investor friendly.Boy traffic in AM CAN sure has gotten horrendous..

You should take into account the expenses that go along with it, taxes, insurance, are you going to keep the utilities on you will need heat if you don't want pipes to freeze or you will need to winterize the property, if you are financing you will have those costs.