Data and Stats....What to analyze for rentals/flips/rehabs

Hi All,

So, i've been thinking about how to get into investing and in particular what my plan and strategy will be...That got me thinking about once i decide a strategy, what stats/data do i need to collect and analyze with regards to market. I have read repeatedly 'KNOW YOUR MARKET' - I do believe perhaps what you need to know depends on your investment strategy. Can you people discuss what in particular they track for the current or target market for the investment strategy they use and also importantly, where they get the data from?

thx.