Quote from bilbod:
Hi IF,
Your view of volume is too simplistic. If it were that simple, everybody would be rich.
The most valuable use of volume is in discerning what Smart Money (aka Market Makers, Floor Traders, the Floor, Strong Hands) are up to.
A frequently quoted statistic is that 90% of retail traders loose money. Where does that money go? It doesn't disappear into thin air. It flows into the pockets of the MM.
If you want to know how to use volume, study Richard Wyckoff's work and a modern off shoot called Volume Spread Analysis.
This is a non trivial topic and will require substantial time and effort to learn how to use it.
Bill