Thanks to everyone who came along and stuck with me through all the hangout technical hitches and for asking such great questions - the final version turned out really well, although frustratingly the audio is in mono, for some reason - last time I tried a hangout it was in stereo, which is the main reason I chose Google+ for the webinar.

Never mind - I've edited the video now and I'm really pleased with the end result - there's a mass of valuable content in there, I think - and I've had a great reaction from everyone who attended.

Hope you find it useful !