I'd say the quality of leads vs other online sources has been and still is pretty good. 

But if there is a way to make it feel less awkward or unsafe can you please let me know.How  can I found mentor on LinkedIn, Facebook or Biggerpockets with out sounding annoying by sending lot of direct message to random people?

Create an Online Presence: Build a strong presence on Facebook, Instagram, and a credible, professional website.

In order to get the attention you want through online ads (which last I checked Facebook ads require such a wide range for the demographic that it is almost not worth it), you would likely need to spend literally thousands of dollars. 

Or maybe the ESA letter is from a bogus online source that isn’t acceptable.

It should be on line, look it up.

I think I can get a policy online with the other requirements, but this waiver seems to be more difficult to find.

@Helene GoodworthTo expand your network, identify your areas of interest, highlight your construction skills' application to investment projects, actively participate in local and online groups, and seek mentorship and guidance from experienced investors.

There are some places online too that have cookie-cutter blueprints too that you can check out as well!  

In my opinion, this area is a melting pot, there is low income, high income, and short term rentals all mixed together. 10-15 years ago, I wouldn't have gone to this area alone to work, but it has gotten a lot better and I have never felt unsafe while working in this area alone.