Call some local HVAC/Mechanical companies and ask what the average cost would be for this upgrade! 

I found the key is to go into one of the local Secretary of States offices. 

Listen to as many podcasts as you can and attend all of your local meetups to connect with other investors.

In order to network with wholesalers and lenders the best way to go about it will be to attend the local REIA like The Greater Houston REIA and also joining the local investors facebook groups. 

I was also planning to work for a property managing firm to learn the ropes of the state and local codes while continuing to invest.

Certainly one account for each LLC, (separate for security deposits based on your local rules)

I found a 4 BR home next to local hospital. 

Additionally, investors should monitor local markets carefully—new supply is coming online, particularly in the multifamily space.

Unless you have a local law that says otherwise, it's not illegal to disclose this. 

Then I work with a local insurance broker give them a valuation of the property, explain that the property is being rented and by how many people.