In addition to Andrew's list for commercial deals you can try loopnet but sometimes those are posted on MLS as well.Facebook groups are also popular for real estate deals.

Filtering out the BS from the real howto is 90% of the battle my man.People show off their stupid lambo's, mansions, or the # of followers.That has NOTHING to do with your system being efficient.People always relate fame or popularity with  "good teacher".

I just bought my first short term rental investment property on a popular river for kayaking and camping in my state.

I just bought my first short term rental investment property on a popular river for kayaking and camping in my state.

You might do well with just vacationers and convention goers but if not, look to interns and students.A popular pivot has been towards military and healthcare essential workers.

These are not as popular as they were a few years ago in the Denver market, but it can be a good tool to have in your toolkit if the seller is willing to accept one.

You're looking at the Midwest for pricing similar to that, although it should be noted that both the acquisition price and rental rate will be higher than what you've proposed in any part of the cheapest metro areas so long as you aren't in the ghetto.Of all of these kinds of markets Cleveland is the one I am most familiar with and it's also very popular with investors across the USA so I figured you'd get some value out of reading The Ultimate Guide to Grading Cleveland Neighborhoods.

The In-N-Out distribution center allows for an entirely new popular franchise to grow around its 12 hour driving radius.

I have a lot of books on my want to read list including the popular such as Rich Dad Poor Dad, some of Bigger pockets book, Art of the Deal, and others. 

You will want to look at neighborhoods adjacent to the most popular ones to find better deals.