Hello,I am planning on purchasing my first out of state turnkey in the near future and utilize a property management firm and realized that I have quite a few questions regarding best practices.  

I live near Wausau and utilize all of these and then some.

I'm in the early learning phase and have been taking in lots of really great material. 

Upper main roof first half replaced 8 years ago, second half replaced last year, and lower roof was replaced last month.4 Separate Crown Aruba Gas Boilers, regularly serviced and approximately 20 years old. 4 Separate Gas hot water heater (ages vary)Washer Dryer hookups available in basement for coin laundry for additional incomeExterior painted two years agoShingle sidingProperty just passed state inspectionReplacement energy efficient windowsPurchase Price: $210kAppraised Value: $285kProperty Type: Quadplex/Turnkey tenants in placeArea: BUnits: 1-3BR, 3-1BRRental Income: $3365 Per Month / $40,380 per year (rents can be raised 5% upon lease renewals)Utilities: Separately metered, each tenant pays their own gas and electricHouse Utilities: Common area utilities are about $20.00 per monthWater/Sewer: Landlord pays $1500 per yearProperty Taxes: $7855 per yearInsurance: $2500 per yearLandscaping/Snow removal: $1221.00Vacancy: ???

If utilities are individually metered, if there's deferred maintenance, etc. all of the way down to what you think it will cost for quarterly pest control. 

The tenant is complaining to me about it , ( what can I do I am not the utility company ?)  

You can also factor upsides like splitting meters, charging tennants for utilities, carports, storage or garages.

Any mistake or issues with the city or utilities and you can blow through the spread in a day.

I will be taking my exam in CA near the Palmdale/Lancaster region, My question however isWhat materials/real estate questions should I study?

You are not a utility and kind find yourself in legal troubles.We manage a small park and are about to do the same thing.