A lot of good advice here and I'll forego my opinions on the actual situation and just say, EVERYONE gets discouraged, down in the dumps, excited, anxious, fearful, etc.  

Ultimately its prob fear and lack of support.

At such a young age, there are definitely fears that I have regarding meeting people that will no doubt be older than I am.

But my fears turned out to be for nothing.I knew what the monthly payment would be, I had a decent idea of what the repairs would be from the pictures in the listing, and I had an idea of what it could rent for.  

I like the overall flexibility of a business line of credit, but fear a higher interest rate.

you should take this time to read up on your local landlord tenant laws. i fear a misinformed landlord may try sbady tactics to get you to leave and any kind of "self help" eviction such as changing locks or shutting off utilities is HIGHLY illegal.

That's my biggest fear.

My fear was that people would sense that I was a newbie and reject me.

Don’t let fear stop you! 

Overall, it's never been the nightmare that I feared (crying children, angry mob chasing me, etc.)