Obviously, multifamily has so many more advantages than a Single family home, but can have more barriers to entry.I would start by learning the business, learning how to syndicate and use seller financing, and then focus on two things if you want to invest in multifamily: Sourcing capital and sourcing deals.More units allows you to hire staff and create some economies of scale.

Are there any recommendations from anyone who have found certain news sites or data sources to extract data from that has helped them understand the current market landscape in their target area?

So I am not sure whether I really need sources of passive income right now considering that I have a lot of energy that I can spend on investment strategies that require more efforts and energy.

It is just a different source of the  funds.  100% LTV implies no money from any other source. 

It is illegal to discriminate against a tenant based on their source of income so I would advise against even mentioning this in any way shape or form.Are you qualified to purchase expensive RE?

A potential trap people may fall into is that they will borrow to source a down payment, therefore ensure you check existing debts and cash flow carefully otherwise you might be in over your head.

A lot of people mentioned Facebook groups, and that may be the best source for what you are looking for.

@Courtney HamiltonRecommend exploring as many sources as possible to get referrals AND cross-reference them to get as much accurate information as possible.Check out NARPM.com, BP’s Property Manager Finder (BiggerPockets: The Real Estate Investing Social Network), etc.Also, encourage you to learn from the mistakes of others - by reading posts here on BiggerPockets about owners not having their expectations met by their current Property Management Company.

The private funding source STOPPED funding the project while construction was going on.

Where can we find reliable source of REI Market trends?