So I sign my lease, then I was informed that we have no mail services at our place, the landlord will not put in mailbox but we can always get a P.O.Box. we'll first I have no vehicle to even go get my mail, it's not in walking distance and there are no local busses on our area.

That is what local politicians and various progressive movements want you to think. 

I am local to SLC as well

For the first time this year, the local government agency has cut off the water to all houses from either 7am to 5:30pm, or from 12:00pm to 5:30pm.   

You will find it most useful to attend a couple of local real estate meetups, because that's where a lot of seasoned and new investors hang out :) Here's one that I host every month, usually for newer investors like yourself:https://www.biggerpockets.com/forums/521/topics/1163449-are-...

I am a Real Estate investor in Colorado looking at doing something similar, I put together a syndication here to work on a development, starting next year to build tiny home neighborhoods in the local area.

I am with Vlad on this: Call the local HA directly.

If you're just starting, I'd suggest you attend some local meetups and network with some local, established, successful investors.  

How many Adults (of local, legal, age...18, 20, 21) ? 

When it comes to buying windows for your house flip, you might want to consider checking out local home improvement stores or even online retailers for a wide selection.