There is a marketplace so you'll have a variety of options to find primary and back up cleaners. 

Write out the questions you have, whether they fall into the details category or even just the “I don’t know where to start” variety.

Once you've explored their products to see if you qualify, then shop the rate and terms around with a variety of brokers and lenders to see if they can offer similar products.

Obviously websites like Zillow are big users of data to estimate a variety of things. 

We often give these since we have online home buyers/sellers/builders looking for guidance in a variety of ways. 

Otherwise, probably the best might be to go to investor Meetup so you can chat a variety of people, get the exposure and understanding to the various facets of REI, and go from there.Good luck.

Our rentals are spread across multiple zip codes...we are open to a variety of places.

Once you narrow your focus you may want to check out the Biggerpockets bookstore for the great selection of books on a wide variety of topics.  

You don't need me to tell you Leyland Cypress or English Laurel, or whatever pompously-named shrub variety is hottest at the nursery right now in your hardiness zone. 

The PMI rate depends on a variety of factors (how much equity in the property, etc).