I understand that some solutions have been made to raise the amount of people that understands how to use this website.
For example the about page which basically is a guide on how you can best use this website which goes thru the basics of it.
My proposal is pretty simple, in order to complete the registration the user needs to run thru small tests which basically is not really a test but merely a sample page like the about page but interactive that will tell you the user do this do that and once he completes it, he gains access to the site as it normally would.
This test would be something like:
To continue mark one of the answers as the right answer by checking the green mark on the left side of the answer.
Once he does it, a message saying congratulations, once a user replies to your question, if you feel that's the right answer, mark it or something like that ;)
Another test like, up or down vote the question or answers by using the up and down arrows on the left of the question.
Then once the user perform the action it will congratulate him and move the next test but before doing so it will say did you know? You need at least X points to up vote a question.
Then once the user completes the basics of using the site at least the most important part which is to mark the answer for example, he gains access to the site.
I believe one down side of StackExchange networks is that more than 90% of the new user don't even know of the existence of the about page nor care to check it when pointed to it, don't use the search and will often do question that will get down vote and/or close and this will make most of then angry or unhappy with the site and/or community as they don't even understand what is going on them self.
Instead of having the about page guide an interactive guide that is obligatory to complete would be way more useful and may lead to better chances.
As for what I mentioned for the test being interactive I meant something like what Code Academy have on their tutorials where you they tell you what to do u do it then you move on.