I wouldn't say you're going to learn as much going through an online course as you would an in-person one, but it is a lot more convenient. 

Hi thereNeeding some guidance if I should run.I am in due diligence on my 2nd deal and the sewer inspection found 3 areas in the sewer line with very tiny roots. 2 were little nubs and the 3rd was  like a new growth on a tree. 

We do them, but they aren't cheap and your LTV will be lower that a HELOC on a primary residence.

.: I just got billed $365 by my property manager for replacing a toilet fill valve and supply line.

Alternatively, does anyone know of a loan originator who can help me create my own friendly line of credit from one of my LLCs and record the liens?

So, keep that in mind because if your struggle you will personally be on the hook for the debt.

Now, some of these answers will depend on what state that property is in, how much equity you have, and a couple of other factors...but you can certainly seek out other lenders about a Line of Credit on an investment property.  

Online title search companies.

I'm seeking advice on scaling my real estate portfolio and attracting potential investors.

You’ll eat it on fees with HELOCS on investment properties.