After you're qualified by a lender and while you look for that next deal, I'd concentrate on your budget to make sure your expenses aren't too high at the moment.

The mtg industry and its various layers underwent many rapid changes over the month of March - one of the craziest and most concentrated period of chaos I've seen in my 19 years to be candid :-)  Rate volatility, programs being shutdown overnight, guidelines restricting (debt-to-income ratios, minimum credit scores, reserve requirements, etc.). 

I could concentrate on a couple counties.

Flips were not my concentration, however I did want to try one.

Coverage has been narrowly focused on a limited number of chains that were heavily concentrated across a few segments that were most vulnerable to disruption, such as apparel, consumer electronics and department stores.

Here're a few suggestions for you:1) Read up as much as possible2) Connect and network with other RE investors3) Go through this article to narrow your REI focus: https://www.biggerpockets.com/member-blogs/10850/86621-six-steps-approach-to-getting-started-in-real-estate4) Save money by taking some side gigs so that you can start investing down the road5) Once you chose your niche within REI, concentrate on studying all about it inside out6) Volunteer for someone in the field to learn from them.7) Take action!

Again, my eyes might be opened, but I have not concentrated on buying new properties.  

@Reda Bennani if you’re going to start looking at other parts of the country there are a lot of factors to look at, like population in general, in/out migration, employment in general and also industry/employer concentration, etc.Folks have been talking about the Carolinas and Texas as good places to invest for years, but you always have to analyze the market to find out if you’re too late on the trend or it still has steam.I usually find it hard to make the numbers work well for single families.

I'm currently concentrating on fourplexes in Mesa, AZ.

@Tim RobinsonI have a few suggestions outside of your immediate questions.1) instead of concentrating on SFH, consider looking into MFH or other RE strategies.