Not really. If you look at the tour of each site, it'll say
Stack Overflow is a question and answer site for professional and enthusiast programmers. It's built and run by you as part of the Stack Exchange network of Q&A sites. With your help, we're working together to build a library of detailed answers to every question about programming.
Emphasis mine; note that it doesn't say something like "tutorial or introduction to every topic within the programming domain". It might be that some answers are written like a tutorial, or some questions & answers together form a decent introduction to a certain topic, but that's just a coincidence. It's just what it says on the tin; nothing more, nothing less.
Can we make some changes for this?
I fear that most changes which would be made to accommodate this would be counter-productive to (or at least distracting from) the main purpose of Stack Exchange. While it's a great network, it's just one of the few resources available on the Internet, each having their own place. If I need an introduction to a certain topic, I'm probably heading to Wikipedia; there are a few other sites I know that have decent tutorials (I usually just Google for examples/tutorials and filter the search results mentally).