I am looking to find as close to a "one stop shop" for viewing foreclosures / distressed properties instead of having to view a half dozen, or more, bank web sites.

Learn the requirements to lend in your state and use that, in part, to base your evaluation.More importantly, do yourself a favor and stay off the web when looking for lenders.

Search the web; 20% do 80% of the work-find one of them.

If I do not put it in an LLC to retain the HELOC, are there other strategies for limiting liability from tenants, or is it just not worth it.Moreover, if there is a link to a "2020" first-time landlord guide with resources for web-based property management, tenant contracts, etc., please feel free to share (I'm still curating my lists).

No web development needed, but someone that is organized and a problem solver.

Does anyone have access to some Excel spread sheets that can help me analyze properties much like the sites "Buy & Hold Analysis" web-based tool?

Sounds like you are on the wrong web site.Invested properly, a good SF investment should yield about 15% cash on cash (or better), in a greatly tax-favored asset class. 

@Jonathan RobertsYou can also try this web link:  http://www.ldevanscpa.com/Very investor friendly and aware of investor's needs..

They will push it out to dozens of web sites and expand your reach.

Check the town web site to confirm the taxes.