I can think of several different ways to approach social changes. There is innovation; the creation of something new. There is adoption; the persuasion of other people to make the change. There is adaptation; changing something that already exists, and there is extinction; when something that was part of a society ceases to exist. These can probably be better described by application to particular changes.
I have an entry for Dacca, Bangladesh.
I've done another level of outline for South Asia. I had a little bit of difficulty deciding which to consider next, but that's settled now.
In history, I've moved into the 3rd century BC: The hellenistic Kingdoms and the increasing prominence of the Roman Republic, and will be sketching out major events for more detailed study later.
One of my readers criticized the Psychology section of the SKB. Now that I take a look at it, it isn't quite as bad as I feared, but I have progresses a little further. However, I will admit that it is incomplete almost to the point of being misleading.