Check out other online guides available here: https://www.biggerpockets.com/guides3.

From what I can tell online, the RF1 zoning district is designed primarily for single family row houses (like townhomes).

I came across conflicting information online, so I wanted to double-check with the knowledgeable folks on this forum. 

Paying for an online course before you know other investors and have gone to meetups is just paying to procrastinate.

Look it up online and see how much u actually can buy.

It's challenging to distinguish between genuine advice and potential scams in the vast sea of information available online.

I'd look at crime rates and I'd also look at multifamily supply projections to see how many units are expected to come online in the next few years. 

I’m always looking to implement best management practices so what can I, as a landlord, do to protect myself when accepting online payments?

(Only if you are SERIOUS about real estate as your wealth/career vehicle.)Make sure you join a brokerage that is large, established, and has a reputation for top performance and excellent training.Once you learn the basics and get out into the field to see the state of the market, you'll learn the price points and be able to know a good/great deal when you stumble across it.I have made some of my best (most lucrative) buys from meeting with a seller who wants to list, and when we discussed the price, I knew it fit my parameters, so I bought it! 

@Yosef Ajami, we use Quickbooks Online for all of our Clients (including syndicators).