I have a couple other reading lists that pair well with real estate investing and running a real estate business (two distinct disciplines!). 

The education piece is very important and eXp does pair up new agents with mentors and has a lot of training via live classes "in the cloud" and recorded training.

@Qwee Parker My number one piece of advice is to use a Realtor who either owns rental properties or specializes in rental properties. 

It may be easier to get that 20-30% down payment money from a person in your network - maybe for a piece of the deal or as a loan or for part of the rent - than it could be for getting 50, 70 or 100% of the cost.   

Land value is just a smaller piece to a bigger puzzle.

Do they make a distinction between the fixtures and features of the property itself, and any tools/equipment/materials you have at the property?

Do they have locks on their personal bedroom doors for some sort of protection and piece of mind?

Another good piece of advice here would be to partner with someone on your first few deals until you get the experience necessary to convince investors to come on board with you on your very own deal.

Best to mask that piece!

This is the most important piece of the puzzle and you can build your team from there.