I know youtube is a great resource and so far I have learnt a lot from it but was wondering where to look for material that can be downloaded to my pc or ipad. Am obviously willing to pay.
Dvd options are not preferable due to my wife's unwillingness to sit through them  
Many thanks
Stuart

Check out my balloon review section and you will see plenty of PDF/video download reviews of material by Tonya, Twistina, David Brenion, Mike Floyd and others.