First, I apologize if any of this was covered by other knowledgeable BPers. I simply read the post and here are my thoughts..
I'm also 23 years old, but this is my first full week as full-time real estate investor. It took me about a year and a half to get enough passive income and a network that logically supported my decision to take the plunge. For me, it was all about the Benjamins.. let me explain.
I had about $400 a month for my car payment and student loan payment combined. Also, the normal things like car insurance, food, etc. In total, my monthly expenses were around $1,200. However, I knew that a big part of why I wanted to be RE investor was the freedom to enjoy the world in a different way, thus, my $500/mo travel budget and $200/mo entertainment budget. Let's just call my monthly expenses $2,000.
You may have noticed.. there was no rent/mortgage expense. That brings me to my first point of advice.. buy a property with an FHA, low money down loan, and rent out 2-4 bedrooms. I'm in the middle of a live and flip with 3 roommates who not only cover my monthly mortgage and other expenses, but I make about $200/mo on top of that. The icing will be the targeted $30K in profit after I sell the home.
Next, read about creative financing or how you can leverage partners with capital but lack a willingness to hustle, and try to buy a couple cash flowing properties before you quit your job. I partnered up with a guy who, for the most part, funded my deals, but we split equity 50/50. My monthly CF from that partnership pays me $1,100/mo now and after repositioning our most recent duplex purchase will be closer to $1,800/mo in August '17. Not to mention, we're closing on a sale of a property on Friday that will profit me roughly $15,000..
In summary, your biggest expense will probably be your living expense, so find a way to eliminate that monthly cost. I'd recommend the FHA loan for a personal live and flip. Secondly, do a few deals before you break it off with your current employer. Get your CF number up to something that at least covers the majority of your monthly expenses.
Time to hustle..