It explained the very basics of DCC in a very straightforward manner, and anybody scared of the technology should feel reassured; but it was very brief and did not go far enough to explain the jargon used and the 'complexities' of programming the loco functions, in my opinion. It was very well produced, looking on the bright side!
as a complete beginner to dcc this was very informative and ideal for someone wanting to convert from analogue control. Not too technical and gives a good introduction.