This exercise amounts to mind mapping along a timeline. Start with your 5 last posts written from left to right on a timeline and build new topics (not time based) around the nodes of those posts. Short, sweet, mindmapping is a skill I use a lot to put the butterfly net around the swirling mass of possibilities.
Guess what! I bet you can see it coming! The next exercise will be putting these new topics into time order!
Here's a quick review of where we've been:
Day 8 has an index of links to Days 1 through 7.