While important, it is not the only value.Selecting reliable tenants is the most valuable service a property manager provides.

I'm particularly interested in insights from fellow investors or realtors who might have valuable information or experiences to share. 

Thanks for all this valuable info.

Whoever is teaching this should have their license revoked... up there with some of the worst counselling I've ever heard.

I'm sure you can learn everything he's teaching on your own but like Jonathan said the relationships can be valuable.

I would highly recommend joining some of the many meetups and networking events in Austin for real estate investors, very valuable exchanges of ideas in person as well

If it's going to be more than that, make sure you have everything well documented because she will likely make your life hell over that money. thank you for your valuable comment. 

Combining this with tours or small events can add extra income.Lease Mineral or Water Rights: Depending on the area, leasing mineral or water rights can be a potential income stream if there are valuable natural resources under the land.

@Zev Jankovic made a good point that "scarcity doesn't necessarily mean it's valuable".

His teachings suggest a paid off home, $500k in assets, and more than 1 source of income (SS if of that age, real estate, part time job, retirement/pension, etc.).