Sorry one additional item I hit post too soon...The reason I asked about TIA is because you generally want to get a contractors opinion of cost prior to lease during that negotiating phase so you know how much that TIA covers and what you'll be coming out of pocket for.  

Nobody ever went broke over a duplex, I know this now,  but I have to admit I had some serious doubts about this when I started 16 years ago, I bought every course I could find, already on CD's, this was post cassette tapes lol, and I paid RichDad Education for a one year coaching program (turned out my coach was a girl in a call center without any actual experience). 

The current rents are really low because the tenants are responsible for doing any and all repairs on their buildings (which in my opinion contributes to the poor condition of the buildings). 

Quote from @Gregory Wilson: Natalie, I don't usually want to debate what are usually opinions, but this needs some correction.First, as stated above, tax audit issues are about 7th on the list of reasons to have every rental property in an LLC.

Ideas, maybe opinions, that's a lot like something else and everyone has them. 

For pure investment the best strategies in CO are Co-Living and Furnished rentals in my opinion.

Just my opinion on courses in general as I have never heard of this person.

Quote from @Melissa Vass Scott: Hey everyone, would value your opinions as we are working towards building a real estate portfolio in the US. 

Opinions vary widely on this subject, but consider getting a real estate license.

This is just my opinion.