I bought a 4-plex (my first multi-family purchase) without an agent. 

My question to experienced people is should I focus on paying off this debt first then investing or would you recommend I take longer to pay off loans but also save for my first 20% down.

When I get them the first thing that pops into my head is how many other people are on this list that are viewing these same properties?

I don't think we're allowed to post links but if you Google "maryland real estate commission guarantee fund" then one of your first links should be to "File a Complaint".

I'm diving into QuickBooks Online for the first time and could use some guidance.

I think the insurance rates in Houston may be a bit of a challenge now as a buy and hold investor.

You should decide who you want to work with first.

Follow-up question: if I hold the property after having bought it under the LLC's name, wouldn't I be subject to commercial rates instead of consumer rates when I go to refinance the construction loan into a permanent loan?

The "exchange rate" for conversions of tax deductions to tax savings vary from investor to investor.

If no, someone has to be a first (not saying you’ll get your money back or should).