I'd be interested to see how you get on with the Cardartifex book Roy, I was only thinking the same a few days ago. I can manage simple stuff (for my 3D printer) but sooner or later I'm going to get stuck! My only concern is that the book seems to go out of date due to F360 updating the layout/commands…
Also, thanks to Thor for his links, I've had a quick look at them and downloaded a couple of guides for reference…
Emgee, thanks for the link, I've used those notes occasionally to get to where I am with it now, or when i've forgotten how to do a command…