I set up a property website through Wix, then posted on CL, Postlets, (which sends out to Zillow, Trulia, and Hot Pads) and Zumper.  

this works in my 15% cap rate (after all pads) market of ScrantonI do my math like thisRent-10% maintenance-10% vacancy-10% management-hard costs- $75/door= amount for mortgage.Mortgage at 6.5% at 20 years tells me finished valuethat minus repairs/updates tells me the max offerhalf that is where i start.

I paid $800 for 20x25 pad with a depth of 6 inches just for the concrete. 

I am an ultimate beginner, I have a duplex, that my wife and I are "house hacking" but  I didn't know what I was doing when I bought it, if we rented our side we might brake even.

Look up PAD Rentals in London - they are a PM firm and a good bunch of guys.  

Cost for RehabLight Rehab: $10-12/sq. ft. (95% of properties need this)Paint Floor1.Carpet2.Tile3.Peel & Stick4.Refinish HardwoodDoorsLightsPlugs & SwitchesMedium Rehab: $20-24/sq. ft. (70% of properties need this)Everything in the light categoryKitchenBathWindowsHeavy Rehab: $30-35/sq. ft.Everything in the low and medium categoryHVACPlumbing ElectricalRoofFoundationMold Average for landlord buyers to get the property in rent ready condition is $8-$12 per sq ft.Average for rehab buyers is $20-$30 per sq ft.If you’re doing an offer sight-unseen, figure Medium rehab costs for your offer.Individual Costs Flooring:-Carpet: $2 sq. ft. carpet/6pound padding installed.

A CRM is absolutely key, using things like the MLS, craigslist, zillow, hot pads, trulia, etc to rent are all excellent ways to find tenants, manage leads and keep your units full. 

Extra income potential for landlord in rents so contractor pads costs or am I hearing you wrong?

Maybe another rental or two will give you the padding you need later in life.

If he is very enthusiastic on this, and the money is technically what he has earned/saved, then it may be very difficult for you to put the brakes on this.