They will be able to give you insight on where they're seeing the most cash-flow, what pitfalls to avoid=, and maybe even help mentor you on your first few deals. 

Deals are definitely found in the numbers, you will probably analyze 100s of properties and make 25-50 offers or so before getting a deal.

Currently there are a ton of buyers pouring money into finding deals off market and it's tight any where in the country.

property_listings=trueYou can also get to this page by going to Find Deals tab on top of this page and click on Community Listings.

The tenant is paying their portion of the rent (the majority is coming from city) but the tenant has been difficult to deal with and I'd like to find an new tenant once their lease is up.

In terms of your next property, while no-money-down deals are possible, they're rare, so focusing on building up some cash reserves will help.

@William Silva your ideal start might be to pinpoint a few markets with lower barrier to entry as others have mentioned, then, find someone local to that market that you pair well with and do a smaller deal.

Do buyers have the legal authority to give the tenants 30 days notice to move out immediately upon the deal closing if they don't want to continue having them as tenants?

As Gino noted, if you buy a lot in cash, that can often be contributed as equity in the deal for the loan, but depending on the value and LTV ratios including your current mortgages on the existing properties, you may have very little equity available to tap into from a refi/HELOC.It has been a while, but the construction loans I have been quoted have been 80% LTV of after construction value, capped at 80% of actual cost.  

The chances are that if the home is a good deal, someone already more experienced looked at it.