Best advice I could give is get very familiar with navigating county web sites.

General question: outside of renting tools from a brick and mortar store, are there any web applications, mobile apps, or online marketplaces where people share construction/remodeling tools peer2peer (similar to turo, Airbnb, etc)?

I can't say about Atlanta specifically, but generally you'll want to check the local municipality web site that the property resides in for any short-term regulations, as well as the HOA if the property belongs to one.  

All my links are in my BP profile, provided you're on the web site and not using the wretched phone app!)

I was looking for a good deal in this web sites and the problem is that everything is renovated and overpriced.

I believe we can strengthen relationships by building up our portfolio in Maine but we can also jumpstart our wealth by getting more deals with an extended web.

@Karl Teshima look up on the web for Lima one capital.

I'm looking for meet-ups and networking events, whether that is in person or on online web calls.

These post are indexed  and shared on the World Wide Web.

Also if you know the census tract # of the property, then there is an IRS or US Treasury web site which has a list of all the OZ census tracts - it's downloadable into a spreadsheet.