Start with BiggerPockets Ultimate Beginners Guide (free).

Stay focused on your goals, and trust the experience you’re gaining will help guide your next steps.

what I saw happen personally was a revolt. instead of cash call to the original GP they used that cash to hire attorney and boot the GPs out with threats of bad things to happen to them.. a couple of the LPS stepped into the GP roll with the attorney guiding them and well folks then put more money in and the projects were ultimately lost a few years later. 

Here are some criteria to check that, from a 10 step guide we made:

I got to my current financial success through a series of well thought out endeavors but with a massive sink or swim element as I am often self guided..."

From what I’ve seen, firms like Exeter 1031 Exchange or Asset Preservation, Inc. have solid reputations for guiding investors through the process efficiently.

+1  Real Estate Investing Data and How-to Guides - This here shows that you can filter to Multi family but I don't see it as an option as well.

The title: The Pro's Guide to Property management Less Stress, More Rent, with Amelia McGee and Grace Gudenkauf. 

That might be the biggest hurdle - but otherwise, I'd check out "DSCR Loans" which are the perfect option for people like you looking to buy rental properties w/o W2 or DTICheck out this 12-part guide published here on BP all about this loan option!

Quote from @John Underwood: DO NOT pay for what is readily available here in this forum and in Avery's book. are you referrring to Avery Carls book Short-Term Rental, Long-Term WealthYour Guide to Analyzing, Buying, and Managing Vacation Properties