I always believe that genuine learning happens only by doing something and not merely from accumulation of facts.
Q&A for professional and enthusiast programmers
Q&A for professional programmers interested in conceptual questions about software development
Q&A for enthusiasts and power users of the Android operating system
Q&A for professional, enthusiast and amateur photographers
Q&A for linguists, etymologists, and serious English language enthusiasts
Q&A for peer programmer code reviews