The Brompton Technical Workshop was organised by Diginexx. Prior to this, I had never fiddled with a bike, and thought it was a good thing to have some technical knowledge on bike maintenance.
With clean bike!
Though some of the skills were specific to the Brompton, there were also other universal and important skills that I learnt:
Removing wheels and tyres
Replacing inner tube
Breaking and fixing up the chain
In short, it is good to attend these types of workshops for your own knowledge, and especially because you will have assistance and support during the process.