Useful links when doing due diligence and analyzing the US market and spotting the safe areas.

http://www.realtor.com/home-values/
Where you can find with a free report how much prices are around the area you are looking, how much did houses have sold in a specific area you select, trends, how long is taking to sell, etc.

http://zipatlas.com/
This web page will give you a report showing you right in the map a detail explanation of demography.
social and economic profiles, as well as statistics, employment rates, households and personal income and much more!!

http://www.zillow.com and  www.trulia.com
They share vital information about homes, real estate and mortgages. It gives information about  how much was a property last sold for, properties for sale in a specific area, foreclosure, etc

http://www.finestexpert.com/
They provide detailed investment property report, cash flow potential, etc.
A good way to find the most recent assessed price for a property in Miami, that is the amount of property tax you'll pay go to this government website:
http://gisims2.miamidade.gov/MyHome/propmap.asp Great web pages when doing your due diligence!

www.redfin.com
www,gosection8.com   - to see what is available in your area for tenants.
www.listingbook.com
www.spotcrime.com
www.rentometer.com
Great web pages when doing your TAX return http://www.trexglobal.com/property-management/landlord-resources/rental-property-tax-deductions