Does anyone recommend knowledge sources on building a mobile home parks (websites, books, organizations, plans, etc..). 

@John Matthew Johnston 80% of the time, it's a thankless job:(You're never fast enough for complaining tenants, nor fast enough or cheap enough for owners.To have any chance of success, you have to be extremely organized, or every day starts with your hair on fire!

Feel free to inquire about their staff qualifications if it's a larger organization.2.

It often takes new organizations similarly long times to get that sort of information.

My vision is for this meetup to be informal and organic.

If she's 70 and still working, my guess is it is not a high paying job and she should have some pension she's also getting.As Kevin mentioned, there are a lot of charitable organizations that will help people out in this situation, especially if they are seniors. 

I'm hoping to start some social media campaigns which are completely unrelated to real estate, but if I build up a sizeable audience over the years, then maybe I can get others to invest with me.

Pairing that with relationship-building will help you uncover off-market opportunities and find local experts who can guide you.For meetups, here are a few ideas:Indianapolis Real Estate Investors Association (Indy REIA): They have a mix of virtual and in-person events and are a good starting point for networking with other investors in the Indy market.Louisville Real Estate Investors Group (REIG): A similar organization for the Louisville market, with educational and networking opportunities.Check out BiggerPockets Meetups: Many cities have local meetups organized by investors active on BiggerPockets, and they often include virtual options.Facebook Groups: Look for local investing groups like "Indianapolis Real Estate Investors" or "Louisville REI."

She has expressed strong interest in managing the property and is very organized, which complements my more scattered approach to things.

They're pretty organized, but expect annual inspections and some extra paperwork.