All was taken care of by month 2, and been going well since, but I don't trust him.

So, we have to deal with tenants that don't take care of their homes and call about every little maintenance issue.

If they have a section that talks about use cases for the laws read the heck out of them because test questions likely are derived from these cases.Otherwise, just know the math.

I inherited three single-family homes and have been educating myself on the various details of real estate investing and will be active here on Bigger Pockets (as well as reading the book...) so once again hello and nice to be here. 

Consider reading "profitable properties" by Daniel Rusteen to help with understanding HOW to "maximize" a listing.

So I try to be careful instructing and encouraging debt to folks; this isn't sub 4% debt this is 6% + debt it's going to cripple some people.

I know LLCs can be used to invest in real estate, but I also read that someone created a leasing company to sublet the individuals personal real estate to the tenants with the actual owner having no liability since their leasing company LLC is the one responsible.This had me wondering how best to use an LLC, and I hope to hear from many of you to better understand how the LLC process works in the real estate world.

Last time I did that, my costs came in right at $1000.The OP is vague because it does not address size or location of heater, type of fuel, self-install or hired, permits required or not, and whether or not they care about a specific brand.  

I am an investor in Reading.

Things will break or not be cared for and it will likely feel personal.