Redfin  zillow etc can help  example https://www.redfin.com/state/New-York/housing-market

Quote from @William Silva: Randall is correct that PM can be expensive. 

If you haven't found someone, send me a message, I can share who we use.

I know the actual cost can vary by location, property type, and provider, but I'm wondering if anyone has a solid set of rule of thumb they use when crunching numbers for a quick analysis?

They tend to be lower maintenance, and the steady cash flow can be a great way to start building your portfolio.That said, vacation properties can be lucrative too, especially in high-demand beach areas.

I've heard there is a bond strategy that can release the liens, allowing the sale to proceed while disputing the claim separately.

If so it’s good you are reasonable and don’t have an issue with it because there’s probably not much you can do about it. 10 years is the standard is many locations though they do vary.  

Some ideas seem great at the time but life changes can quickly derail your goals.

Both men are on Youtube and offer their systems for direct purchase or you can partner with them AFTER you buy.I'm looking for something that I can both learn to do alone as well as partner up with someone. 

Multi family 2-4 units are good to start with as you can leverage the income into another property and continue doing so over and over again.