A lifetime in IT but I still have to 'mug up' on stuff

It is amazing to me that although I have been in this industry for more years than I care to count I still find nooks and crannies where I feel like a veritable babes in arms.

This week my focus is UML – frankly I knew it existed but it was not one of the tools that I have had to got ‘eyeball to eyeball’ on.
With my role encompassing Visio I have been called upon to demo the UML modelling capabilities of the product and frankly I am not sure where to begin, I have arrange some training with my colleagues in Redmond but that is only using the tool. I have put myself on a crash course on UML (through research) and 3 days on I realise what a deep and useful subject this is.
However my customer demo goes I am sure the investment in becoming familiar with the framework will be time well spend.