Each town is a little different, some require you to do a landlord registration and/or will want to do an inspection before you put a tenant in (calling the town would probably be the easiest, or they may have the info right online).

We use Quickbooks Online for our main accounting software.  

They're good to have open access to capital/cash/equity to a property ahead of time so you can execute a deal or purchase when the time comes on a split second decision (versus having to apply to a loan at that time which might take 20-45 days to get approved/closed/etc plus by that time you dont know what your future income/credit/assets will be like in order to qualify anyway).The second use is sleep at night factor and having a reserve of capital in the event an emergency event occurs in life.For these two reasons is why I use lines of credit.

Permit expeditors (they usually know how hard it is to do in that area too) are great if everything is not already completely online with the jurisdiction.

You can also check their reviews online at Google, Facebook, or Yelp.

so the thing you're looking for is likely something you can't find online.  

Localize City (Homebuyers and investors who want a deeper understanding of neighborhood dynamics and potential risks)  AGAIN, ALL BS, I can show you neighborhoods that you will run away from if you sit online and  " learn" 8.

Had I hired a professional, it would have been done in a month and the extra five months of rent income would have paid for the contractor, saving me six months of nights and weekends.

Hello I like to go by Rhyse online!

just algebra, or you can plug it in online calculator.If your resulting DSCR is 1.1, not good.