rule #1 nothing is automated, at first. put in some work first. Your title is "how to build a brand" and your two questions have nothing to do with building a brand. maybe i miss understood.. but really.. what are you actually asking about?
If your new, you just need to let people know what you do. first thing i would do is network. get to know other investors in your area. Why? because its free. You can send $1,000 quick in mail and get no value from it.
Second you need Education. you just need to learn.
I highly recommend checking out propelio academy, its 100% free
https://www.propelio.com/academy/
then you need to start marketing. Marketing can be a lot of different things, bandit signs, mailers, google ads. ect...
BWT your head is in the right spot, you need to house hack. This was the best thing I ever did...
I would recommend to listen to / read these books
-Millionair real estate investor - gary keller
-Set for life - Scott Trench