Thanks again for the reply DWhatley!
After following your links, I've being doing a lot of reading. One of my store's fish suppliers said they had "Cephalopods A World Guide" by Mark Norman in stock, and I got really excited and ordered it as quickly as I could... until they called back and said they have none left and can't get a hold of anymore.
I've found keeping an octopus incredibly exciting and informative. I am studying an advanced diploma at the moment but unfortunately there isn't a section on Cephalopods!
Wayne and I have continued to bond. He seems to realise that his food comes from me, and gets awfully excited if I'm near his tank, which is really cool. He usually wakes up at about 11pm, and I'm not sure what time he goes back to his den. His colours and shape change when I ignore him; for example if I walk into my room to grab my keys, and don't stop and look at him, he will sit in the corner in a tight ball, all dark and moody!
This evening he spent his first day in the under gravel pvc tunnels I made him (as far as I'm aware; he may have already explored them whilst I've been asleep). I seen him trying to push his head through, and he got some round deep yellow circles on his body, almost as if he was frustrated with himself trying to fit through. The pipes are an inch wide, and there is plenty of space for him, though.
He's sitting with his legs in the tunnel, and head sticking out. His eyes are squinted, which I'm interpreting as a "sleepy" mode, because I never use lights apart from a 3w red LED I bought. If I put my hand up and wiggle my fingers like an octopus, he will tilt his head to get a proper look to see what I'm doing, then return back to his lounging, as if saying "please, I'm far more intelligent than that!"
I've been feeding him about three cockles a week, which he finishes in about 10 minutes. He usually runs up to the top corner of the tank, takes the food with two legs, and holds onto my hand with the other six, to see if I have anything else for him. A local fisherman told me he will get me some live small crabs for free, which I already have a holding tank set up for, but he hasn't got them yet. I would like to give Wayne some live or fresh food, just to vary his diet and provide a bit more stimulation.
I will endeavour to get some more photos and videos to share, but with the red led it is quite difficult to show him off. I may try putting a dim white one on slowly for a few minutes.
There is something exciting and captivating about being a part of this. It is not like looking after any other animal. Every day is a learning day for both Wayne and myself! Thanks to everyone who has helped me so far on our journey!