This week's book giveaway is in the OCAJP forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide 1Z0-808 and have Jeanne Boyarsky & Scott Selikoff on-line! See this thread for details.
This course has challenged me good and proper -- and within weeks I was already getting compliments for my improved style and readability.
I remember one assignment (a supposedly simple one) where I spent days banging my head against the wall and fretting and uttering totally inappropriate epithets... and when I finally saw the instructor's solution... Let's just say that the lesson has stuck!