yeah..."aggressive climb" is not a common musical term, so books won't help...at least not until you can phrase it in more technical terms and look
those up.
I assume you mean shifting from one position to another, higher up the neck, without loosing any musical fluidity. This really comes from learning your scales beyond mere one position fingering patterns, and familiarizing yourself with scales over the whole neck. check "PacMan's surefire scale practice method "in the stickies.
Hope that's what you were asking about
