What to buy?... Good question!!
Well the "problem" here is, that each of the products has it's advantages and disadvantages, just by possibilities the according media format dictates.
Of course I would say it's definitely the best to use all of our products together, to learn more quickly, but even though we tried to keep our products affordable for most, not everybody can afford all our Tricktionary windsurfing tools right away... Maybe the following can help you a little, to find out what fits best for you!!
Tricktionary II book
Our windsurfing bible contains the most information. The tuition is presented a lot in beautiful picture sequences, with detailed text explanations in various languages (depending on what version you buy) and additionally with crash-photos, comon problems and solutions, as well as tips to learn moves more quickly.
Audio and visual aspects will make it easier for you to understand the movement and the feeling the move should lead to. You will also find all the tips and tricks, as well as problems and solutions as they are in the book, but space on DVD's is very much limited and so each move can only contain a limited amount of information (voice) - therefore you actually have a bit less PURE content on the DVD.
Using book and DVD (see our Trickpack!!) helps you to make best use of both worlds - static text and images, together with audio and visual impressions should produce the quickest learning process!
Tricktionary iPhone app
Now the newest publication, the iPhone app - totally new media, making it all more interactive and extremely mobile! The app contains all the moves the book and the DVD do, it can't contain as much information as the book, neither does it offer as detailed video instructions as the DVD does, but it combines both products into a summarized version that you can carry whereever you take your phone (which for most people nowadays is EVERYWHERE :) ).
The app is perfect if you want to have all the instructions always with you and if you want to have super quick access to all the pre-exercises and so on. you can see the static images combined with text, as well as video features to be able to imagine how the move should feel.
Hope this makes your decision a bit easier - and in doubt - just get it all ;)