Welcome aboard. I would look at these links so you don't create problems for your self down the line.
Leerburg | Dog Parks: Why They Are A Bad Idea
Leerburg | Who Pets Your Puppy or Dog
I've not done the two week shut down myself though I believe in it and think it would have helped me avoid some "issues" that I had later on.Others can chime in but here is a link:
I just got a rescued dog – what do I do? | stickydogblog
The hand think you can start teaching uh or no and offer a treat.