Instruct: Classify an Amazon review into positive or negative sentiment.
Query: The how, why, and history of web standards.

I devoured Jeffrey Zeldman's "Designing With Web Standards" from cover to cover. "Designing With Web Standards" unlocks the power of building with standards and presents the long list of benefits that standards will bring to any web site. Packed with practical information, this book catapults web developers from theory to nuts and bolts page construction. It's written in a highly accessible style (not unlike the XHTML described within) and packed with real web site examples. My web development skills have grown immensely after reading this book. It's also just plain ol' fun to read.