Joining a local REI Association is excellent too.

No offense, but when there are tenant problems, an excellent PM is worth their weight in gold. 

Sales is where I excel.

We find ourselves receiving a combination of PDFs, excel spreadsheets, banking statements etc which then require reconciling and organization on our end.

I use Quicken for my personal finances and to see balances in business bank accounts.All my rental and expense stuff I keep in Excel.

@Matthew ScottFinding a mentor can be an excellent way to gain valuable insights and guidance as you embark on your first fix-and-flip project.

The house is fully updated, and we keep it in excellent repair. 

Look for their ratings/reviews.Look for specific PM names, confirm if they are still with the companyPut those ratings in Excel and determine your own average ratingCheck out forums like BiggerPockets for additional reviewsWrite down all the reviews you have concerns about. 

@Theo Hicks Excellent example! 

Baseline is an excellent option, especially if you want more built-in like bookkeeping.