That wil get you started.

I enjoy visuals and management, which got me started on Airbnb.

This sounds great, I just started investing in the US (and a few challenges have already popped up), so would love to meet and hear from you @Marco Santarelli and @Cal Ewing and others who are already active in that market.

I started out on Stessa when it was free.

I, personally, would consider any other option, including bankruptcy for your sister if she really has that much debt that she can't pay, rather than ask my nephew to give that much equity away and start over smaller with a much higher rate.         

Hello everyone, With deciding to start in real estate, my main goal is to create enough equity in the properties I obtain to build a house and buy land  (10-12) years down the line.Though the market always changes, I figured with investing into highly appreciating markets now, the properties I buy will accumulate the equity needed to be able to sell in the future which in turn will lead to the income needed to build and buy land. 

If you were starting out again, how would you approach it as a beginner?

He started at 25 and is around 50 now.  

How should I even get started?

Whatever you use, make sure it's state-specific.6) Putting a cap on utilities is smart, especially when you're starting out and have no idea what they're going to cost you.