Finding and analyzing the best "NNN" opportunity

[Beatriz Nahuz]

I am a real estate agent that works with International real estate investors. I am currently building a portofolio of NNN properties to purchase. I have never purchased a nnn property before, I am now getting familiar with things I need to analyze. I wanted to know if there are some key things or ratios that i need to look out for? Numbers of stores? Size of property ? Location? Etc.... Also, are there companies that can do this type review? I have a couple of nnn picked out.... But I need advice on how to pick the best opportunity.