can someone explain volume indicator for me?

HI guys

can someone explain or show a link on how to use and interpret the volume indicator...thanks detailed I mean

Hope this link from wiki http://en.wikipedia.org/wiki/Price_and_Volume_Trend & investopedia http://www.investopedia.com/search/r...ator&submit=Go helps.

When volume rise, it confirm trend
when volume decrease it manifest weakness
A break out with out volume increase, non trustable

IMHO, spot forex is not traded in any centralize exchange platform so interpreting volume may not be as useful compare with other exchange traded product like equities and futures & options (open interest also need to interpret besides volume)... Nevertheless, this book i find is good (a classic which was first printed in 1931) Tape Reading & Market tactics by Humphrey B.Neil... if you are interested, maybe you can still find it available from amazon..