From Sydney:

• follow the F3 freeway heading north toward Newcastle and veer left off the first Gosford turnoff just past the Australian Reptile Park Icon (dinosaur)
• Turn right at the 3rd set of traffic lights towards Woy Woy (be cautious of speed camera)
• ...

From Newcastle:

• follow the F3 freeway heading towards Sydney and veer left off the first Gosford turnoff (DO NOT take the Ourimbah turnoff which points to the Gosford Hospital)
• Follow the signs to Gosford, taking two left hand turns onto the Central Coast Highway then right at the 2nd set of traffic lights towards Woy Woy (be cautious of speed camera)
• ...