"Classic Trading Volume Mnemonic"

Buy horizontally and buy the dips, don't buy vertically; the selling point is at the boiling point.
A continuous small increase is a real increase, while a continuous large increase means it's time to exit.
A sudden drop with low volume is a scare tactic; a gradual drop with high volume means you should withdraw quickly.
A significant rise requires a pullback; don't dig deep holes and don't buy too much.