As you may know, Paul White is the Editor-in-Cheif of Sound On Sound Magazine and has been for some years now.
Two years ago he wrote the book "The Producer's Manual" which was a big hit with both budding and professional music producers.
The new iPad version includes all the content from the original paper edition, plus it has a few extras including over an hour of video content.
Although some of the technology involved in music production has changed over the last couple of years, the principals and production techniques described in the book haven't really changed that much - the book is still highly relevant and I would even go as far as to say it's required reading for those of you who are just starting out.
The Producer's Manual covers all aspects of recording techniques from mic placement, to working with different instruments, and even working with artists and how to get the best performances out of them.
It also covers mixing principals and final mastering techniques.
Here is the promo video (on the right) for the iPad version which gives you an idea about how the information is presented in electronic form: ->
At the time of writing this, the new iPad version is selling for $20.99.
For more information visit iTunes