The Great Ocean Road is described as one of the World’s Great Drives.There are some web pages devoted to the drive and the two best ones I found were the Great Ocean Road, Victoria, Australia – Visit Victoria and the 1 Day Great Ocean Road & 12 Apostles Tour $96.
The Great Ocean Walk parallels the Great Ocean Road. It’s a walk of 65 miles. There is a documentary about the walk. If you have an Amazon Prime subscription you can see it for free.