Dave Ramsey's training is structured towards personal finances.

I plan on going to the Queens auction this upcoming Friday.

I have a free training on YT on how to do this.

Train is huge! 

I have recently been considering this same train of thought. 

The notes I have, have performed very well, and would love to stay on that train.

It's easy to obtain, costs very little, and doesn't require extra, on-going effort to maintain.

You would have ongoing filing requirements with the State and would need to keep business records and documentation.

Biggest thing IMO is getting close to the train station and have a high quality units that may not look attractive on paper the first few years but will have the ability to raise rents consistently long term. 

Look for one that includes a training video to ensure you understand how to best use it.