Salaam mia666,
You asked:
What can we do to teach people to follow the Quran correctly?
That is a very good question. I believe the answer lies in our (you, I, and every other member here) own history. In other words, every member on this form ones deeply held the same views expressed by many traditionalist Muslims today, some of those views failing to find clear and unambiguous support from the Quran; yet, after having come across Joseph Islam's site and his many article, we were able to convinced of the many views he shares, views most traditionalist Muslims would object to yet find clear support from the Quran. So, to answer your question, I believe exposing them to these views and engaging them with respect to the areas we may differ on (using the Quran to support our arguments) would do a great deal.
And thanks to Sstikstof for sharing that.
Peace.