No instructions needed, regenerationfez! When Bootcamp starts I set up one chat thread per week, and each thread is always titled something along the lines of "Week 1, Pre-Christmas Bootcamp, and we're off ..."
I always post a link to our spreadsheet, which is where everyone records their Monday weigh-in (if they want to - it's not compulsory), and which has all kinds of useful information contained within it, e.g. the rules, the list of veg carb counts, links to useful websites, blogs, videos, etc.
At the beginning of each Bootcamp I also set up a thread for questions, because the chat threads can move very quickly sometimes, so if someone has a specific question it's more likely to be seen on the questions thread.
So the chat thread is simply that - a place to chat about how it's going, what you're eating, how much you're losing (or not!), a place to moan and vent. Just like the rest of Mumsnet 