You have to focus.
In a big picture way you have to decide if this is really right for you. You have to do some self reflection and decide what is you competitive advantage. Do you have access to family money, are you wicked good with numbers, are you a great negotiator, can you swing a hammer? This will help you determine what niche you should be in and what other people you might need to bring on.
Pick an area, probably one that you know already, probably where you live, or plan to live. Pick a niche. If you like Multi, do that, if you like condos, know everything about condos in your area. It doesn't really matter, pick one and learn everything. Ignore everything else.
Talk to a lender in your area, talk to a few. I was recently surprised to learn I can buy another property with a conventional loan because I talked to a lender that offers financing that counts the property's income towards your own. Make no assumptions. Talk to everyone with a "how can I" not an "I can't" attitude.
Go to a REIA and introduce yourself. That's a great place to meet lenders and agents.
Take a local investor (that you find on BP) out for drinks. Ask questions. Offer your time. Ask what they are looking for.
Most importantly: Take action everyday. Read books, and spend time on BP, listen to every podcast, but most importantly meet people. Meet with three people in RE three times a week. Ask flippers if you can see their flips, Ask brokers for P&Ls on listings and practice crunching the numbers. Do something everyday.
I finally took this advice and my Real Estate world is blowing up.
Give yourself a deadline: 6 months to buy a 4-Plex. Put the date on your fridge. Work backwards. In 4 months I need a 4-Plex under contract, in 3 months I need to have looked at 20 4-Plexes, in 2 months I need my management systems, contractors etc lined up, in one month I need my financing figured out in 2 weeks I need to know what my buying criteria are, in 1 week I need to know what market I'll be investing in, today I need to analyze the market where I live and decide if it will accomplish my goals. Something like that.
This is a business. It is not passive income, at least not at the start. Get to work and have some fun.