If you want to maximize your learning-per-reading-time, you should probably forget about my blog and read Farnam Street. I like learning about cognition, learning, and productivity; Shane Parrish at Farnam Street seems to live a life immersed in such learning, and does a great job of boiling it down for brief presentation. If you must stick around here, though, my WordPress stats will be thrilled–believe me, every page view shows up as a substantial percentage!
Scott H. Young and Cal Newport also will often be worth your time to read.