buyers are building...

lifes4livin posted "buyers are building, looks like we might have an afternoon run!"

I've noticed that when one side of the market depth starts to build up, it's an indication that a spillover move is about to occur. It makes sense - the more orders there are, the greater the chance that one of those orders will jump the gun and say "To hell with it - I'll just trade at market right now!"

Can any HC contributors recommend some books or articles that can further explain the movement of trades throughout a day, and how to read the market depth? I'm particularly keen to understand why trades seems to occur in packs, and why there are periods of inactivity which may be quite natural.

The market sometimes seems like a living animal. Is this just crowd behavior?