un•put•down•a•ble
Pronunciation: (un”poot-dou’nu-bul), [key]
—adj. Informal.
Adjective meaning consistently and irresistibly interesting. Typically refers to a book that is so well written and entertaining as to be difficult to (literally) put down and pause away from.

Normally a term used to describe novels, but the vSphere Quick Start Guide certainly fits the definition. Last month I was finishing [...]