This question is almost related to another question of mine. It is about finding the good question easy for reading and referring to it later. But then, I was asked to use search.
Now, I guess it is right time to reiterate the same request with a slight change. Think of Wikibooks or some sort that stuff. The language wise collection to include various top questions and important, interesting top answers, the answers can contain comments and examples to make the reading easy. It can be problem book with answers, starting from simple questions to advanced concepts.
I know it is little too much of asking in a Q&A site. But the truth is there are many people like me, who browse through SO to find good questions, techniques in language of our interest and learn concepts that way, this approach will make life easier for lot of us. If there is a proper mechanism/tool, people can compile a good collection of question through which one can learn language/technique.
What do you think?