Described in many of my books, you can obtain the financial ratios of an ETF, such as P/E from Yahoo!Finance and RSI(14) from finviz.com... I have a simple ETF rotation technique described also.
However, many ratios such as
debt/equity are not readily available. To do so, get the average of the
top 10 holdings (more if you have time) of an ETF of any financial ratios.