my two cents would be that if you find a potentially good deal, conduct  a desktop analysis to estimate the numbers, check for liens etc  if it checks out well, then conduct a walkthrough in order to run more specific repair estimates.

I'm looking to set up Quickbooks Desktop for my Rental Properties that are managed through a Property Manager.

Use EDDM: You can target a particular zip code using Every Door Direct Mail - Using a service such as VistaPrint, you can create, edit, and mail a post card to an EDDM zip code or targeted location right from your PC. 

I alternate between PC and letter.

@Christian D.Have you considered quickbooks desktop version?

I can't seem to log on via desktop or mobile.

My company (Guaranteed Rate) was letting appraisers use Facetime or Skyp to see the interior of the property, for instance.A few weeks after we instituted this practice, Fannie Mae and Freddie Mac came out with clear guidance:If your landlord is doing a "cash back" refinance (taking more than $2k of cash back or paying off a second mortgage that wasn't used to buy the property), a traditional interior inspection will be required.If they are not taking cash back, for the most part "desktop" appraisals and exterior-only appraisals can be used.

So would it look something like this:Personal Checking Account (PC): $10k (this is where money is deposited from a W2 JobPersonal Savings Account (PS): $20k (6 month emergency fund)Business Checking Account (BC): $0Business Savings Account (BS): $1k (this is where security deposits,  tenant vacancy, and money for repairs/capex goes)?

The IRS does not care if you buy a house, improve it and sell it or buy computer components and assemble them into a PC. 

Desktop Accounting software like QuickBooks ideally.