You propose a very interesting idea Brian of a digital tree with leaves representing Facebook pages. I understand that a leaf linking to a representative Facebook Page would shimmer or rustle depending on the traffic on that Page. Together this collage of leaves, representative of your Facebook Pages, would look like a tree with the leaves moving in the breeze based on each Pages traffic (posts).
I share in your frustration as I too am new to the Wolfram Language and I wish there was a mentorship for adults. Going back to the first step of your program, you are trying to create a leaf in which you will place a hyperlink to the Facebook Page. Then, you will need to create a data base of your Facebook Pages and a simple mechanism to import the individual links into each leaf of your tree. Do I understand your concept correctly?
From what I understand from your post and the one you mentioned from Todd Rowland is that there is NO structure for a leaf or botanical images using the Wolfram Language? Am I missing something as there are images for planets, anatomy, etc.? I hope someone in the community can assist you with your question to get you to the first step! I will try to figure this out but as I said, I too am learning :)