It could be the on line portal doesn't show all back taxes.  

I'm starting to see Redfin "for sale" signs pop up in my area(Baltimore), so I did a little research online to see how their process works.  

Baley Whary I started using Cozy.co last month for rent collection when my new tenant requested an online payment option.

Starting out into rental property business.....looking into possibly using Easyrent.com for my tenant screening and online rent collection. 

I order them online for that house.

We have chosen biggerpockets because of there close knit online community.

You'll find tons of info online - but like @Sunny Suh recommended, you're best bet is to speak with a lender and outline your particular situation.Here's a link to get your research started: http://portalapps.hud.gov/FHAFAQ/controllerServlet?

You can take the classes online while where you are so that when you get here you are ready to test and hit the ground running.

There are some online money market accounts that pay at or a little better than 1% if you wish to keep risk lower and maintain high liquidity.  

Ryan DosseyRyan, I didn't take to 90 hour initial real estate course online, but did it in the classroom so I cant answer for the initial licensing course.