My suggestion would be to read 1-2 books/articles in each space and then set up conversations with 1-2 investors in each space to truly understand what skill sets, etc... would be needed in each avenue.

This post addresses the first question above through my own research: appreciation of new construction versus older/existing homes.Scope & methodologyOut of Scope: I have found lots of articles on the pros and cons of buying a new vs existing home.

While you may not be considering moving to a market and house-hacking, I think this BiggerPockets article still offers great data for out-of-state buy-and-hold investors.Key takeaways: Fayetteville, AR and Indianapolis, IN may be good places for you to start if you're new.

This may help too..https://help.pricelabs.co/portal/en/kb/articles/listing-mark...

Key Principles:Mindset and Goals:Think Long-Term: Real estate is a long term play in most cases Set Clear Goals: Define your financial goals and how real estate fits into your overall plan.Finding the Right Property:Location, Location, Location: Invest in areas with strong economic fundamentals, good schools, and low crime rates.Cash Flow is King: Look for properties that generate positive cash flow (rental income exceeds expenses).Consider Appreciation: While cash flow is primary, also consider properties in areas with potential for long-term appreciation.Financing:Get Pre-Approved: Get pre-approved for a mortgage before you start looking at properties.Leverage Wisely: Use leverage (debt) to your advantage, but don't overextend yourself.Consider Creative Financing: Explore options like seller financing or partnerships.Building Your Team:Real Estate Agent: Find an experienced agent who specializes in investment properties.Property Manager: Consider hiring a property manager to handle day-to-day operations.Accountant: An accountant can help you with tax planning and financial management.Attorney: Consult an attorney for legal advice and contract reviews.Managing Your Investment:Maintain the Property: Keep your property in good condition to attract and retain quality tenants.Screen Tenants Carefully: Conduct thorough background checks on potential tenants.Review Your Finances Regularly: Track your income and expenses and make adjustments as needed.Example Action Steps:Set Your Goals: Define your financial goals and how real estate will help you achieve them.Educate Yourself: Read books and articles about real estate investing.

Full article here. 

I thought that these were in person until recently when I read a news article that Senate Bill 140, which passed in 2023, allows sheriffs in Louisiana to conduct foreclosure auctions online.

A couple of years back I read an article regarding what was called the donut effect when it came to major cities.

I have read many articles on the types of real estate investment strategies like wholesaling, buy and flip (and buy and hold), structuring deals for no money down seller financing and even investing in notes! 

Take a look at BP's blog where new articles are published every day: https://www.biggerpockets.com/blog4.