AirDNA looks impressive, but is there a tool that can provide more information graphically? 

HELOCs can be a great tool, especially if your interest rate is low or lower than you could get elsewhere.

This gives you more negotiating power and lets you see responses from multiple sellers so you can get better deals.

The site has quite a few tools that can be helpful for new members.

The BP podcasts and blog posts are also great educational tools.

If you are putting it into another cash flowing deal, I think that is a power move to increase your leverage.

That gives you 60 extra weekdays to get up to speed on stuff that requires a lot of uninterrupted brain power.

"Online Rental Programs" like Rent Redi are software tools that assist owners in managing their own properties.

Things I'm concerned about: the price of homes in my market is high and worried about a downturn (though I plan to keep these rentals for the long term), I'm not sure what financing tools are available to me.Any help is much appreciated!

It is easy to use and even my more casual staff can figure it out.Yardi Breeze was also very good but the front-end marketing and tenant onboarding is very weak in my view and I was going to make too many compromises in my processes to get Breeze to fit.Yardi Voyager is VERY powerful but you will need dedicated staff that always spend time on it.