Re: GMing Styles
Have you actually discussed this difference of playing style with your player?
Sit down with him and talk how you would like the campaign to run. Explain that you prefer a sort of extemporaneous, make your own goals campaign. Encourage him to explore the world, listen to rumors, make NPC friends and pick his own path to follow. If he really resists changing styles, talk him into a one session trial and really bring the world to life for him. Make it bright and real and easy to fall into.
That simple friend to friend conversation will probably help you get the play style you want to get more than 10 pages of advice online. Give it a shot.