Conversation so far:
What was special about Tom Morello's technique?
Morello chooses various effects pedals.
During his tenure in RATM, he used a Dunlop Cry Baby, a DigiTech WH-1 Whammy, a Boss DD-2 Digital Delay, a DOD EQ pedal .
How did he learn this method?
CANNOTANSWER.
Did he always use this technique?
In the studio, Morello uses the same setup for the bulk of the guitar tracks.

Question: What else does he use in practice?
Self-contained rewrite: Besides the pedal technique, what else does Tom Morello use in practice?